x-9+x=70

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Solution for x-9+x=70 equation: 


Simplifying
x + -9 + x = 70

Reorder the terms:
-9 + x + x = 70

Combine like terms: x + x = 2x
-9 + 2x = 70

Solving
-9 + 2x = 70

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 + 2x = 70 + 9

Combine like terms: -9 + 9 = 0
0 + 2x = 70 + 9
2x = 70 + 9

Combine like terms: 70 + 9 = 79
2x = 79

Divide each side by '2'.
x = 39.5

Simplifying
x = 39.5

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