12-42=4(x-1)-4

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Solution for 12-42=4(x-1)-4 equation:


Simplifying
12 + -42 = 4(x + -1) + -4

Combine like terms: 12 + -42 = -30
-30 = 4(x + -1) + -4

Reorder the terms:
-30 = 4(-1 + x) + -4
-30 = (-1 * 4 + x * 4) + -4
-30 = (-4 + 4x) + -4

Reorder the terms:
-30 = -4 + -4 + 4x

Combine like terms: -4 + -4 = -8
-30 = -8 + 4x

Solving
-30 = -8 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-30 + -4x = -8 + 4x + -4x

Combine like terms: 4x + -4x = 0
-30 + -4x = -8 + 0
-30 + -4x = -8

Add '30' to each side of the equation.
-30 + 30 + -4x = -8 + 30

Combine like terms: -30 + 30 = 0
0 + -4x = -8 + 30
-4x = -8 + 30

Combine like terms: -8 + 30 = 22
-4x = 22

Divide each side by '-4'.
x = -5.5

Simplifying
x = -5.5

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