21x-24=9x+24

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Solution for 21x-24=9x+24 equation:


Simplifying
21x + -24 = 9x + 24

Reorder the terms:
-24 + 21x = 9x + 24

Reorder the terms:
-24 + 21x = 24 + 9x

Solving
-24 + 21x = 24 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-24 + 21x + -9x = 24 + 9x + -9x

Combine like terms: 21x + -9x = 12x
-24 + 12x = 24 + 9x + -9x

Combine like terms: 9x + -9x = 0
-24 + 12x = 24 + 0
-24 + 12x = 24

Add '24' to each side of the equation.
-24 + 24 + 12x = 24 + 24

Combine like terms: -24 + 24 = 0
0 + 12x = 24 + 24
12x = 24 + 24

Combine like terms: 24 + 24 = 48
12x = 48

Divide each side by '12'.
x = 4

Simplifying
x = 4

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