42-18=3(x-1)

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Solution for 42-18=3(x-1) equation:


Simplifying
42 + -18 = 3(x + -1)

Combine like terms: 42 + -18 = 24
24 = 3(x + -1)

Reorder the terms:
24 = 3(-1 + x)
24 = (-1 * 3 + x * 3)
24 = (-3 + 3x)

Solving
24 = -3 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
24 + -3x = -3 + 3x + -3x

Combine like terms: 3x + -3x = 0
24 + -3x = -3 + 0
24 + -3x = -3

Add '-24' to each side of the equation.
24 + -24 + -3x = -3 + -24

Combine like terms: 24 + -24 = 0
0 + -3x = -3 + -24
-3x = -3 + -24

Combine like terms: -3 + -24 = -27
-3x = -27

Divide each side by '-3'.
x = 9

Simplifying
x = 9

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