15-42=5(x-1)-7

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Solution for 15-42=5(x-1)-7 equation:


Simplifying
15 + -42 = 5(x + -1) + -7

Combine like terms: 15 + -42 = -27
-27 = 5(x + -1) + -7

Reorder the terms:
-27 = 5(-1 + x) + -7
-27 = (-1 * 5 + x * 5) + -7
-27 = (-5 + 5x) + -7

Reorder the terms:
-27 = -5 + -7 + 5x

Combine like terms: -5 + -7 = -12
-27 = -12 + 5x

Solving
-27 = -12 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
-27 + -5x = -12 + 5x + -5x

Combine like terms: 5x + -5x = 0
-27 + -5x = -12 + 0
-27 + -5x = -12

Add '27' to each side of the equation.
-27 + 27 + -5x = -12 + 27

Combine like terms: -27 + 27 = 0
0 + -5x = -12 + 27
-5x = -12 + 27

Combine like terms: -12 + 27 = 15
-5x = 15

Divide each side by '-5'.
x = -3

Simplifying
x = -3

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