3+x+x+8=7

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Solution for 3+x+x+8=7 equation: 


Simplifying
3 + x + x + 8 = 7

Reorder the terms:
3 + 8 + x + x = 7

Combine like terms: 3 + 8 = 11
11 + x + x = 7

Combine like terms: x + x = 2x
11 + 2x = 7

Solving
11 + 2x = 7

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 + 2x = 7 + -11

Combine like terms: 11 + -11 = 0
0 + 2x = 7 + -11
2x = 7 + -11

Combine like terms: 7 + -11 = -4
2x = -4

Divide each side by '2'.
x = -2

Simplifying
x = -2

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