-4x+18=9x-21

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Solution for -4x+18=9x-21 equation:


Simplifying
-4x + 18 = 9x + -21

Reorder the terms:
18 + -4x = 9x + -21

Reorder the terms:
18 + -4x = -21 + 9x

Solving
18 + -4x = -21 + 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.
18 + -4x + -9x = -21 + 9x + -9x

Combine like terms: -4x + -9x = -13x
18 + -13x = -21 + 9x + -9x

Combine like terms: 9x + -9x = 0
18 + -13x = -21 + 0
18 + -13x = -21

Add '-18' to each side of the equation.
18 + -18 + -13x = -21 + -18

Combine like terms: 18 + -18 = 0
0 + -13x = -21 + -18
-13x = -21 + -18

Combine like terms: -21 + -18 = -39
-13x = -39

Divide each side by '-13'.
x = 3

Simplifying
x = 3

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