X+21=64

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Solution for X+21=64 equation: 


Simplifying
X + 21 = 64

Reorder the terms:
21 + X = 64

Solving
21 + X = 64

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 = 64 + -21

Combine like terms: 21 + -21 = 0
0 + X = 64 + -21
X = 64 + -21

Combine like terms: 64 + -21 = 43
X = 43

Simplifying
X = 43

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