30-8x=4x-42

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Solution for 30-8x=4x-42 equation:


Simplifying
30 + -8x = 4x + -42

Reorder the terms:
30 + -8x = -42 + 4x

Solving
30 + -8x = -42 + 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 + -8x + -4x = -42 + 4x + -4x

Combine like terms: -8x + -4x = -12x
30 + -12x = -42 + 4x + -4x

Combine like terms: 4x + -4x = 0
30 + -12x = -42 + 0
30 + -12x = -42

Add '-30' to each side of the equation.
30 + -30 + -12x = -42 + -30

Combine like terms: 30 + -30 = 0
0 + -12x = -42 + -30
-12x = -42 + -30

Combine like terms: -42 + -30 = -72
-12x = -72

Divide each side by '-12'.
x = 6

Simplifying
x = 6

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