2x+x+(x-5)=31

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Solution for 2x+x+(x-5)=31 equation:


Simplifying
2x + x + (x + -5) = 31

Reorder the terms:
2x + x + (-5 + x) = 31

Remove parenthesis around (-5 + x)
2x + x + -5 + x = 31

Reorder the terms:
-5 + 2x + x + x = 31

Combine like terms: 2x + x = 3x
-5 + 3x + x = 31

Combine like terms: 3x + x = 4x
-5 + 4x = 31

Solving
-5 + 4x = 31

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + 4x = 31 + 5

Combine like terms: -5 + 5 = 0
0 + 4x = 31 + 5
4x = 31 + 5

Combine like terms: 31 + 5 = 36
4x = 36

Divide each side by '4'.
x = 9

Simplifying
x = 9

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