-3x-7+8x+20=-42

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Solution for -3x-7+8x+20=-42 equation:


Simplifying
-3x + -7 + 8x + 20 = -42

Reorder the terms:
-7 + 20 + -3x + 8x = -42

Combine like terms: -7 + 20 = 13
13 + -3x + 8x = -42

Combine like terms: -3x + 8x = 5x
13 + 5x = -42

Solving
13 + 5x = -42

Solving for variable 'x'.

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

Add '-13' to each side of the equation.
13 + -13 + 5x = -42 + -13

Combine like terms: 13 + -13 = 0
0 + 5x = -42 + -13
5x = -42 + -13

Combine like terms: -42 + -13 = -55
5x = -55

Divide each side by '5'.
x = -11

Simplifying
x = -11

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