21+1x=21+3

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Solution for 21+1x=21+3 equation: 


Simplifying
21 + 1x = 21 + 3

Combine like terms: 21 + 3 = 24
21 + 1x = 24

Solving
21 + 1x = 24

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 + 1x = 24 + -21

Combine like terms: 21 + -21 = 0
0 + 1x = 24 + -21
1x = 24 + -21

Combine like terms: 24 + -21 = 3
1x = 3

Divide each side by '1'.
x = 3

Simplifying
x = 3

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