4x+21=9x-24

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Solution for 4x+21=9x-24 equation:


Simplifying
4x + 21 = 9x + -24

Reorder the terms:
21 + 4x = 9x + -24

Reorder the terms:
21 + 4x = -24 + 9x

Solving
21 + 4x = -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.
21 + 4x + -9x = -24 + 9x + -9x

Combine like terms: 4x + -9x = -5x
21 + -5x = -24 + 9x + -9x

Combine like terms: 9x + -9x = 0
21 + -5x = -24 + 0
21 + -5x = -24

Add '-21' to each side of the equation.
21 + -21 + -5x = -24 + -21

Combine like terms: 21 + -21 = 0
0 + -5x = -24 + -21
-5x = -24 + -21

Combine like terms: -24 + -21 = -45
-5x = -45

Divide each side by '-5'.
x = 9

Simplifying
x = 9

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