x+x-1+x+2=31

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Solution for x+x-1+x+2=31 equation:


Simplifying
x + x + -1 + x + 2 = 31

Reorder the terms:
-1 + 2 + x + x + x = 31

Combine like terms: -1 + 2 = 1
1 + x + x + x = 31

Combine like terms: x + x = 2x
1 + 2x + x = 31

Combine like terms: 2x + x = 3x
1 + 3x = 31

Solving
1 + 3x = 31

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + 3x = 31 + -1

Combine like terms: 1 + -1 = 0
0 + 3x = 31 + -1
3x = 31 + -1

Combine like terms: 31 + -1 = 30
3x = 30

Divide each side by '3'.
x = 10

Simplifying
x = 10

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