8+x+x=20

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Solution for 8+x+x=20 equation:


Simplifying
8 + x + x = 20

Combine like terms: x + x = 2x
8 + 2x = 20

Solving
8 + 2x = 20

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 = 20 + -8

Combine like terms: 8 + -8 = 0
0 + 2x = 20 + -8
2x = 20 + -8

Combine like terms: 20 + -8 = 12
2x = 12

Divide each side by '2'.
x = 6

Simplifying
x = 6

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