12-2x-5-7x=20

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Solution for 12-2x-5-7x=20 equation:


Simplifying
12 + -2x + -5 + -7x = 20

Reorder the terms:
12 + -5 + -2x + -7x = 20

Combine like terms: 12 + -5 = 7
7 + -2x + -7x = 20

Combine like terms: -2x + -7x = -9x
7 + -9x = 20

Solving
7 + -9x = 20

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + -9x = 20 + -7

Combine like terms: 7 + -7 = 0
0 + -9x = 20 + -7
-9x = 20 + -7

Combine like terms: 20 + -7 = 13
-9x = 13

Divide each side by '-9'.
x = -1.444444444

Simplifying
x = -1.444444444

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