12x+24=21x-3

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Solution for 12x+24=21x-3 equation:


Simplifying
12x + 24 = 21x + -3

Reorder the terms:
24 + 12x = 21x + -3

Reorder the terms:
24 + 12x = -3 + 21x

Solving
24 + 12x = -3 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
24 + 12x + -21x = -3 + 21x + -21x

Combine like terms: 12x + -21x = -9x
24 + -9x = -3 + 21x + -21x

Combine like terms: 21x + -21x = 0
24 + -9x = -3 + 0
24 + -9x = -3

Add '-24' to each side of the equation.
24 + -24 + -9x = -3 + -24

Combine like terms: 24 + -24 = 0
0 + -9x = -3 + -24
-9x = -3 + -24

Combine like terms: -3 + -24 = -27
-9x = -27

Divide each side by '-9'.
x = 3

Simplifying
x = 3

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