9+11+x=20+7

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Solution for 9+11+x=20+7 equation: 


Simplifying
9 + 11 + x = 20 + 7

Combine like terms: 9 + 11 = 20
20 + x = 20 + 7

Combine like terms: 20 + 7 = 27
20 + x = 27

Solving
20 + x = 27

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + x = 27 + -20

Combine like terms: 20 + -20 = 0
0 + x = 27 + -20
x = 27 + -20

Combine like terms: 27 + -20 = 7
x = 7

Simplifying
x = 7

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