42=3(x-4)

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Solution for 42=3(x-4) equation: 


Simplifying
42 = 3(x + -4)

Reorder the terms:
42 = 3(-4 + x)
42 = (-4 * 3 + x * 3)
42 = (-12 + 3x)

Solving
42 = -12 + 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.
42 + -3x = -12 + 3x + -3x

Combine like terms: 3x + -3x = 0
42 + -3x = -12 + 0
42 + -3x = -12

Add '-42' to each side of the equation.
42 + -42 + -3x = -12 + -42

Combine like terms: 42 + -42 = 0
0 + -3x = -12 + -42
-3x = -12 + -42

Combine like terms: -12 + -42 = -54
-3x = -54

Divide each side by '-3'.
x = 18

Simplifying
x = 18

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