15+x=77-x

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Solution for 15+x=77-x equation:


Simplifying
15 + x = 77 + -1x

Solving
15 + x = 77 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
15 + x + x = 77 + -1x + x

Combine like terms: x + x = 2x
15 + 2x = 77 + -1x + x

Combine like terms: -1x + x = 0
15 + 2x = 77 + 0
15 + 2x = 77

Add '-15' to each side of the equation.
15 + -15 + 2x = 77 + -15

Combine like terms: 15 + -15 = 0
0 + 2x = 77 + -15
2x = 77 + -15

Combine like terms: 77 + -15 = 62
2x = 62

Divide each side by '2'.
x = 31

Simplifying
x = 31

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