6+6+x=20

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Solution for 6+6+x=20 equation: 


Simplifying
6 + 6 + x = 20

Combine like terms: 6 + 6 = 12
12 + x = 20

Solving
12 + x = 20

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + x = 20 + -12

Combine like terms: 12 + -12 = 0
0 + x = 20 + -12
x = 20 + -12

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

Simplifying
x = 8

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