(x-15)+(2x-8)=31

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Solution for (x-15)+(2x-8)=31 equation:


Simplifying
(x + -15) + (2x + -8) = 31

Reorder the terms:
(-15 + x) + (2x + -8) = 31

Remove parenthesis around (-15 + x)
-15 + x + (2x + -8) = 31

Reorder the terms:
-15 + x + (-8 + 2x) = 31

Remove parenthesis around (-8 + 2x)
-15 + x + -8 + 2x = 31

Reorder the terms:
-15 + -8 + x + 2x = 31

Combine like terms: -15 + -8 = -23
-23 + x + 2x = 31

Combine like terms: x + 2x = 3x
-23 + 3x = 31

Solving
-23 + 3x = 31

Solving for variable 'x'.

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

Add '23' to each side of the equation.
-23 + 23 + 3x = 31 + 23

Combine like terms: -23 + 23 = 0
0 + 3x = 31 + 23
3x = 31 + 23

Combine like terms: 31 + 23 = 54
3x = 54

Divide each side by '3'.
x = 18

Simplifying
x = 18

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