(7+x)+(4-x)+x=78

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Solution for (7+x)+(4-x)+x=78 equation:


Simplifying
(7 + x) + (4 + -1x) + x = 78

Remove parenthesis around (7 + x)
7 + x + (4 + -1x) + x = 78

Remove parenthesis around (4 + -1x)
7 + x + 4 + -1x + x = 78

Reorder the terms:
7 + 4 + x + -1x + x = 78

Combine like terms: 7 + 4 = 11
11 + x + -1x + x = 78

Combine like terms: x + -1x = 0
11 + 0 + x = 78
11 + x = 78

Solving
11 + x = 78

Solving for variable 'x'.

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

Add '-11' to each side of the equation.
11 + -11 + x = 78 + -11

Combine like terms: 11 + -11 = 0
0 + x = 78 + -11
x = 78 + -11

Combine like terms: 78 + -11 = 67
x = 67

Simplifying
x = 67

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