-3x-42=3(x-4)

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


Simplifying
-3x + -42 = 3(x + -4)

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

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

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

Combine like terms: -3x + -3x = -6x
-42 + -6x = -12 + 3x + -3x

Combine like terms: 3x + -3x = 0
-42 + -6x = -12 + 0
-42 + -6x = -12

Add '42' to each side of the equation.
-42 + 42 + -6x = -12 + 42

Combine like terms: -42 + 42 = 0
0 + -6x = -12 + 42
-6x = -12 + 42

Combine like terms: -12 + 42 = 30
-6x = 30

Divide each side by '-6'.
x = -5

Simplifying
x = -5

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