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

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


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

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

Combine like terms: -3 + -7 = -10
-10 + 20 + 8x = -42

Combine like terms: -10 + 20 = 10
10 + 8x = -42

Solving
10 + 8x = -42

Solving for variable 'x'.

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

Add '-10' to each side of the equation.
10 + -10 + 8x = -42 + -10

Combine like terms: 10 + -10 = 0
0 + 8x = -42 + -10
8x = -42 + -10

Combine like terms: -42 + -10 = -52
8x = -52

Divide each side by '8'.
x = -6.5

Simplifying
x = -6.5

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