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Viktor [21]
3 years ago
11

What is the solution to the equation

Mathematics
2 answers:
Elis [28]3 years ago
8 0

Answer:

x = -13

Step-by-step explanation:

Distribute:

8 - 6x + 10x - 15 = 20 - 5x

Combine like terms:

4x - 7 = 20 - 5x

Isolate Variable

-x = 13

-1(-x) = -1(13)

x = -13

Montano1993 [528]3 years ago
8 0

Answer: x=3

Step-by-step explanation:

You need to apply Distributive property on the left side of the equation:

2(4-3x)+5(2x-3)=20-5x\\\\8-6x+10x-15=20-5x

Now you must add the like terms on the left side of the equation:

-7+4x=20-5x

Add 5x to both sides:

-7+4x+5x=20-5x+5x\\\\-7+9x=20

Add 7 to boht sides of the equation:

-7+9x+7=20+7\\\\9x=27

And finally, divide both sides by 9:

\frac{9x}{9}=\frac{27}{9}\\\\x=3

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IgorC [24]

Answer:

28

Step-by-step explanation:

-2 × -7 = 14

14 × 2 = 28

thats the correct answer

8 0
4 years ago
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Answer:

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8 0
3 years ago
What is the solution to the system of equations graphed below? y = x - 2 y = 4x - 5
ololo11 [35]
There are 3 available methods - Substitution , Elimination and <span>Matrix.  

</span>The substitution<span> method is used to eliminate one of the variables by replacement. 
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The elimination method<span> is used for solving linear systems. 
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<span>A Matrix is an array of numbers. 
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Lets use Substitution to solve this system. 

x-2=4x-5 

-2=4x-5-x 

-2=(4x-x)-5&#10;&#10; &#10; 

-2=3x-5 

-2+5=3x 

3=3x 

3=3x / 3 

x=1 

Now substitute <span>x=1  
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y=x-2 

y=1-2&#10;&#10; &#10; 

y=-1&#10;&#10; 

Hence - x=1&#10; &#10;y=-1 

6 0
3 years ago
8 ounce bag contains 86 pieces. how much would be in a 12 ounce bag
Montano1993 [528]
8 / 86 = 12 / x
cross multiply
(8)(x) = (86)(12)
8x = 1032
x = 1032/8
x = 129 pieces
0 0
3 years ago
Divide £24 in the ratio 7:1​
allsm [11]

Answer:

Step-by-step explanation:

just add 7 + 1= 8 and do 24  divided by 8 which is 3 so then the answer would be £21:£3

6 0
3 years ago
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