13=8x-7+12x-20

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Solution for 13=8x-7+12x-20 equation:


Simplifying
13 = 8x + -7 + 12x + -20

Reorder the terms:
13 = -7 + -20 + 8x + 12x

Combine like terms: -7 + -20 = -27
13 = -27 + 8x + 12x

Combine like terms: 8x + 12x = 20x
13 = -27 + 20x

Solving
13 = -27 + 20x

Solving for variable 'x'.

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

Add '-20x' to each side of the equation.
13 + -20x = -27 + 20x + -20x

Combine like terms: 20x + -20x = 0
13 + -20x = -27 + 0
13 + -20x = -27

Add '-13' to each side of the equation.
13 + -13 + -20x = -27 + -13

Combine like terms: 13 + -13 = 0
0 + -20x = -27 + -13
-20x = -27 + -13

Combine like terms: -27 + -13 = -40
-20x = -40

Divide each side by '-20'.
x = 2

Simplifying
x = 2

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