x+x+8=78

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Solution for x+x+8=78 equation: 


Simplifying
x + x + 8 = 78

Reorder the terms:
8 + x + x = 78

Combine like terms: x + x = 2x
8 + 2x = 78

Solving
8 + 2x = 78

Solving for variable 'x'.

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

Add '-8' to each side of the equation.
8 + -8 + 2x = 78 + -8

Combine like terms: 8 + -8 = 0
0 + 2x = 78 + -8
2x = 78 + -8

Combine like terms: 78 + -8 = 70
2x = 70

Divide each side by '2'.
x = 35

Simplifying
x = 35

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