20+x=21

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Solution for 20+x=21 equation: 


Simplifying
20 + x = 21

Solving
20 + x = 21

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 = 21 + -20

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

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

Simplifying
x = 1

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