5x-20+3x+42=31

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Solution for 5x-20+3x+42=31 equation:


Simplifying
5x + -20 + 3x + 42 = 31

Reorder the terms:
-20 + 42 + 5x + 3x = 31

Combine like terms: -20 + 42 = 22
22 + 5x + 3x = 31

Combine like terms: 5x + 3x = 8x
22 + 8x = 31

Solving
22 + 8x = 31

Solving for variable 'x'.

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

Add '-22' to each side of the equation.
22 + -22 + 8x = 31 + -22

Combine like terms: 22 + -22 = 0
0 + 8x = 31 + -22
8x = 31 + -22

Combine like terms: 31 + -22 = 9
8x = 9

Divide each side by '8'.
x = 1.125

Simplifying
x = 1.125

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