x+x+x-9=37

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Solution for x+x+x-9=37 equation: 


Simplifying
x + x + x + -9 = 37

Reorder the terms:
-9 + x + x + x = 37

Combine like terms: x + x = 2x
-9 + 2x + x = 37

Combine like terms: 2x + x = 3x
-9 + 3x = 37

Solving
-9 + 3x = 37

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 3x = 37 + 9

Combine like terms: -9 + 9 = 0
0 + 3x = 37 + 9
3x = 37 + 9

Combine like terms: 37 + 9 = 46
3x = 46

Divide each side by '3'.
x = 15.33333333

Simplifying
x = 15.33333333

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