12x+8=9x-4-42

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Solution for 12x+8=9x-4-42 equation:


Simplifying
12x + 8 = 9x + -4 + -42

Reorder the terms:
8 + 12x = 9x + -4 + -42

Reorder the terms:
8 + 12x = -4 + -42 + 9x

Combine like terms: -4 + -42 = -46
8 + 12x = -46 + 9x

Solving
8 + 12x = -46 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
8 + 12x + -9x = -46 + 9x + -9x

Combine like terms: 12x + -9x = 3x
8 + 3x = -46 + 9x + -9x

Combine like terms: 9x + -9x = 0
8 + 3x = -46 + 0
8 + 3x = -46

Add '-8' to each side of the equation.
8 + -8 + 3x = -46 + -8

Combine like terms: 8 + -8 = 0
0 + 3x = -46 + -8
3x = -46 + -8

Combine like terms: -46 + -8 = -54
3x = -54

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

Simplifying
x = -18

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