42-12=5(x-1)

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Solution for 42-12=5(x-1) equation:


Simplifying
42 + -12 = 5(x + -1)

Combine like terms: 42 + -12 = 30
30 = 5(x + -1)

Reorder the terms:
30 = 5(-1 + x)
30 = (-1 * 5 + x * 5)
30 = (-5 + 5x)

Solving
30 = -5 + 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.
30 + -5x = -5 + 5x + -5x

Combine like terms: 5x + -5x = 0
30 + -5x = -5 + 0
30 + -5x = -5

Add '-30' to each side of the equation.
30 + -30 + -5x = -5 + -30

Combine like terms: 30 + -30 = 0
0 + -5x = -5 + -30
-5x = -5 + -30

Combine like terms: -5 + -30 = -35
-5x = -35

Divide each side by '-5'.
x = 7

Simplifying
x = 7

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