x+(x+7)=78

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Solution for x+(x+7)=78 equation:


Simplifying
x + (x + 7) = 78

Reorder the terms:
x + (7 + x) = 78

Remove parenthesis around (7 + x)
x + 7 + x = 78

Reorder the terms:
7 + x + x = 78

Combine like terms: x + x = 2x
7 + 2x = 78

Solving
7 + 2x = 78

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 2x = 78 + -7

Combine like terms: 7 + -7 = 0
0 + 2x = 78 + -7
2x = 78 + -7

Combine like terms: 78 + -7 = 71
2x = 71

Divide each side by '2'.
x = 35.5

Simplifying
x = 35.5

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