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Vika [28.1K]
3 years ago
9

6(2x-1)-12=3(7x+6 Please help ALGEBRA

Mathematics
1 answer:
Flauer [41]3 years ago
8 0

Answer:

x=-4

Step-by-step explanation:

6(2x-1)-12=3(7x+6)

Distribute

12x -6 -12 = 21x +18

Combine like terms

12x-18 = 21x+18

Subtract 12x from each side

12x-12x-18 = 21x-12x+18

-18 = 9x+18

Subtract 18 from each side

-18-18 = 9x+18-18

-36 = 9x

Divide by 9

-36/9 = 9x/9

-4 =x

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When a number is substituted for the same variable in two expressions, how many times must those two expressions have different
zysi [14]

Answer:

Hope this helps!!!

Step-by-step explanation:

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To achieve our goal, we use two principles of equality, the addition principle and the multiplication

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• Use the multiplication principle to solve for the variable. If the variable is multiplied by a

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To solve equations, use the procedure outlined below.

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4 0
3 years ago
Read 2 more answers
Simplify the expression below:<br><br> p ÷ (-5) ≥ - 9<br><br> ⮜|-------|--------|➤
wlad13 [49]

Answer:

Step-by-step explanation:

Rank Topic Problem Formatted Problem

1 Factor x^2‑4 x2−4x2‑4

2 Factor 4x^2+20x+16 4x2+20x+164x2+20x+16

3 Graph y=‑x^2 y=−x2y=‑x2

View 97 more rows

{1, 2, 3, 4, 5, …}

WHOLE NUMBERS

{0, 1, 2, 3, 4, …}

INTEGERS

{…, 3, 2, 1, 0, 1, 2, …}

RATIONAL NUMBERS

All numbers that can be written in the form , where a

and b are integers and .

IRRATIONAL NUMBERS

Real numbers that cannot be written as the quotient of two

integers but can be represented on the number line.

REAL NUMBERS

Include all numbers that can be represented on the number

line, that is, all rational and irrational numbers.

PRIME NUMBERS

A prime number is a number greater than 1 that has only

itself and 1 as factors.

Some examples:

2, 3, and 7 are prime numbers.

COMPOSITE NUMBERS

A composite number is a number that is not prime. For

example, 8 is a composite number since

8 = 2 . # 2 # 2 = 23

Rational Numbers

Real Numbers

23, 22.4, 21 , 0, 0.6, 1, etc. 4_ 2 5

25VN

Irrational

Numbers

Integers p 23, 22, 21, 0, 1, 2, 3, p

Whole Numbers 0, 1, 2, 3, p

Natural Numbers 1, 2, 3, p

3,

VN2, p, etc.

b Z 0

a>b

–5 –4 –3

Negative integers Positive integers

4 0
3 years ago
Read 2 more answers
I need help for 2,3, and 4
emmainna [20.7K]

Answer:

<h2>2.</h2>

x = -1 , y = 4

<h2>3.</h2>

x = 7, y = -1

<h2>4.</h2>

x = 1, y = 2

Step-by-step explanation:

2. 6x + 2y = 2, -3x - 4y = -13

3. 4x + 8y = 20, -4x + 2y = -30

4. y = -3x + 5, 5x - 4y = -3

<h2>2.</h2>

We have to determine the solutions of this system of equations, basically look for x and y. First, let's solve through elimination.

6x + 2y = 2

-3x - 4y = -13

Multiply the second equation by 2 :

6x + 2y = 2

-6x - 8y = -26

Add the equations and solve for y :

-6y = -24

Divide both sides by -6 :

y = 4

Now that we have found y, we can substitute 4 in y of the first equation :

6x + 2(4) = 2

6x + 8 = 2

Subtract 8 from both sides :

6x = -6

Divide both sides by 6 :

x = -1

<h2>3.</h2><h2></h2>

4x + 8y = 20

-4x + 2y = -30

We are asked to solve in elimination style, do as followed :

4x + 8y = 20

-4x + 2y = -30

Add and solve for y :

10y = -10

Divide 10 from both sides to get y alone :

y = -1

Now that we know y, we can substitute it into the first equation :

4x + 8(-1) = 20

4x - 8 = 20

Add 8 to both sides :

4x = 28

Divide 4 from both sides :

x = 7

<h2>4.</h2><h2 />

y = -3x + 5

5x - 4y = -3

We are asked to solve with substitution :

Since the first equation has y alone, we can replace it with y in the second equation :

5x - 4(-3x + 5) = -3

Distribute :

5x + 12x - 20 = -3

Combine like terms :

17x - 20 = -3

Add 20 to both sides :

17x = 17

Divide 17 from both sides :

x = 1

Now that we know y, we can substitute x in the first equation with 1 :

y = -3(1) + 5

y = -3 + 5

y = 2

<h2></h2>

8 0
3 years ago
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