7(x+4)-2(x+4)=15

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Solution for 7(x+4)-2(x+4)=15 equation:


Simplifying
7(x + 4) + -2(x + 4) = 15

Reorder the terms:
7(4 + x) + -2(x + 4) = 15
(4 * 7 + x * 7) + -2(x + 4) = 15
(28 + 7x) + -2(x + 4) = 15

Reorder the terms:
28 + 7x + -2(4 + x) = 15
28 + 7x + (4 * -2 + x * -2) = 15
28 + 7x + (-8 + -2x) = 15

Reorder the terms:
28 + -8 + 7x + -2x = 15

Combine like terms: 28 + -8 = 20
20 + 7x + -2x = 15

Combine like terms: 7x + -2x = 5x
20 + 5x = 15

Solving
20 + 5x = 15

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-20' to each side of the equation.
20 + -20 + 5x = 15 + -20

Combine like terms: 20 + -20 = 0
0 + 5x = 15 + -20
5x = 15 + -20

Combine like terms: 15 + -20 = -5
5x = -5

Divide each side by '5'.
x = -1

Simplifying
x = -1

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