(x-7)+x+(x+7)=39

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Solution for (x-7)+x+(x+7)=39 equation: 


Simplifying
(x + -7) + x + (x + 7) = 39

Reorder the terms:
(-7 + x) + x + (x + 7) = 39

Remove parenthesis around (-7 + x)
-7 + x + x + (x + 7) = 39

Reorder the terms:
-7 + x + x + (7 + x) = 39

Remove parenthesis around (7 + x)
-7 + x + x + 7 + x = 39

Reorder the terms:
-7 + 7 + x + x + x = 39

Combine like terms: -7 + 7 = 0
0 + x + x + x = 39
x + x + x = 39

Combine like terms: x + x = 2x
2x + x = 39

Combine like terms: 2x + x = 3x
3x = 39

Solving
3x = 39

Solving for variable 'x'.

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

Divide each side by '3'.
x = 13

Simplifying
x = 13

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