7x+12=15x-20

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Solution for 7x+12=15x-20 equation:


Simplifying
7x + 12 = 15x + -20

Reorder the terms:
12 + 7x = 15x + -20

Reorder the terms:
12 + 7x = -20 + 15x

Solving
12 + 7x = -20 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
12 + 7x + -15x = -20 + 15x + -15x

Combine like terms: 7x + -15x = -8x
12 + -8x = -20 + 15x + -15x

Combine like terms: 15x + -15x = 0
12 + -8x = -20 + 0
12 + -8x = -20

Add '-12' to each side of the equation.
12 + -12 + -8x = -20 + -12

Combine like terms: 12 + -12 = 0
0 + -8x = -20 + -12
-8x = -20 + -12

Combine like terms: -20 + -12 = -32
-8x = -32

Divide each side by '-8'.
x = 4

Simplifying
x = 4

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