11+10+x=20

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Solution for 11+10+x=20 equation: 


Simplifying
11 + 10 + x = 20

Combine like terms: 11 + 10 = 21
21 + x = 20

Solving
21 + x = 20

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + x = 20 + -21

Combine like terms: 21 + -21 = 0
0 + x = 20 + -21
x = 20 + -21

Combine like terms: 20 + -21 = -1
x = -1

Simplifying
x = -1

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