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Burka [1]
3 years ago
13

What is the solution for the equation, 2(4x – 6) = 8x – 12

Mathematics
2 answers:
Katena32 [7]3 years ago
8 0

Simplifying

2(4x + -6) = 8x + -12

Reorder the terms:

2(-6 + 4x) = 8x + -12

(-6 * 2 + 4x * 2) = 8x + -12

(-12 + 8x) = 8x + -12

Reorder the terms:

-12 + 8x = -12 + 8x

Add '12' to each side of the equation.

-12 + 12 + 8x = -12 + 12 + 8x

Combine like terms: -12 + 12 = 0

0 + 8x = -12 + 12 + 8x

8x = -12 + 12 + 8x

Combine like terms: -12 + 12 = 0

8x = 0 + 8x

8x = 8x

Add '-8x' to each side of the equation.

8x + -8x = 8x + -8x

Combine like terms: 8x + -8x = 0

0 = 8x + -8x

Combine like terms: 8x + -8x = 0

0 = 0

Solving

0 = 0

Lesechka [4]3 years ago
4 0

Answer:

X = 1

Step-by-step explanation:

2(4x - 6) = 8x - 12

(8x - 12) = 8x - 12

    + 12          + 12

8x         =   8x

x         =        1

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Answer:

7.75 ounces more

Step-by-step explanation:

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4 0
3 years ago
Solve the equation by completing the square. Round to the nearest hundredth if necessary. x^2 + 3x - 5= 0
Charra [1.4K]

Answer:

\large\boxed{x\approx-4.19\ \vee\ x\approx1.19}

Step-by-step explanation:

x^2+3x-5=0\qquad\text{add 5 to both sides}\\\\x^2+3x=5\\\\x^2+2(x)(1.5)=5\qquad\text{add}\ 1.5^2=2.25\ \text{to both sides}\\\\x^2+2(x)(1.5)+1.5^2=5+2.25\qquad\text{use}\ (a+b)^2=a^2+2ab+b^2\\\\(x+1.5)^2=7.25\Rightarrow x+1.5=\pm\sqrt{7.25}\\\\x+1.5\approx\pm2.69\\\\x+1.5\approx-2.69\ \vee\ x+1.5\approx2.69\qquad\text{subtract 1.5 from both sides}\\\\x\approx-4.19\ \vee\ x\approx1.19

6 0
3 years ago
34 points <br><br> -2[3x-(b+2x)+(x-3b)]<br><br> plz show steps i'm stuck
natali 33 [55]
First,multiply the -2 by everything in the brackets
so that's, -6x-(b-4x)+(x+6b)
then combine like terms
that's -6x-(7b-3x) which is
-3x-7b I believe
5 0
3 years ago
What is the value of x in the equation 3(4x + 6) = 21?
Elenna [48]

For this case we must find the value of the variable "x" of the following equation:

3 (4x + 6) = 21

We apply distributive property to the terms within parentheses:

12x + 18 = 21

We subtract 18 from both sides of the equation:

12x + 18-18 = 21-18

We divide between 12 on both sides of the equation:

12x = 3

x = \frac {3} {12}\\x = \frac {1} {4}

Answer:

x = \frac {1} {4}

8 0
3 years ago
When x=_1 what is the value of y
Akimi4 [234]

Answer:

No y

Step-by-step explanation:

Since

x=-1

is a vertical line, there is no y-intercept and the slope is undefined.

6 0
3 years ago
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