42-12=5(x-9)

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Solution for 42-12=5(x-9) equation:


Simplifying
42 + -12 = 5(x + -9)

Combine like terms: 42 + -12 = 30
30 = 5(x + -9)

Reorder the terms:
30 = 5(-9 + x)
30 = (-9 * 5 + x * 5)
30 = (-45 + 5x)

Solving
30 = -45 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
30 + -5x = -45 + 5x + -5x

Combine like terms: 5x + -5x = 0
30 + -5x = -45 + 0
30 + -5x = -45

Add '-30' to each side of the equation.
30 + -30 + -5x = -45 + -30

Combine like terms: 30 + -30 = 0
0 + -5x = -45 + -30
-5x = -45 + -30

Combine like terms: -45 + -30 = -75
-5x = -75

Divide each side by '-5'.
x = 15

Simplifying
x = 15

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