-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 = 29
5x = 29

Divide each side by '5'.
x = 5.8

Simplifying
x = 5.8

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