24=X+21

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Solution for 24=X+21 equation:


Simplifying
24 = X + 21

Reorder the terms:
24 = 21 + X

Solving
24 = 21 + X

Solving for variable 'X'.

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

Add '-1X' to each side of the equation.
24 + -1X = 21 + X + -1X

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

Add '-24' to each side of the equation.
24 + -24 + -1X = 21 + -24

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

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

Divide each side by '-1'.
X = 3

Simplifying
X = 3

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