5+x=21

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Solution for 5+x=21 equation: 


Simplifying
5 + x = 21

Solving
5 + x = 21

Solving for variable 'x'.

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

Add '-5' to each side of the equation.
5 + -5 + x = 21 + -5

Combine like terms: 5 + -5 = 0
0 + x = 21 + -5
x = 21 + -5

Combine like terms: 21 + -5 = 16
x = 16

Simplifying
x = 16

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