4x-6=9x-21

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Solution for 4x-6=9x-21 equation:


Simplifying
4x + -6 = 9x + -21

Reorder the terms:
-6 + 4x = 9x + -21

Reorder the terms:
-6 + 4x = -21 + 9x

Solving
-6 + 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.
-6 + 4x + -9x = -21 + 9x + -9x

Combine like terms: 4x + -9x = -5x
-6 + -5x = -21 + 9x + -9x

Combine like terms: 9x + -9x = 0
-6 + -5x = -21 + 0
-6 + -5x = -21

Add '6' to each side of the equation.
-6 + 6 + -5x = -21 + 6

Combine like terms: -6 + 6 = 0
0 + -5x = -21 + 6
-5x = -21 + 6

Combine like terms: -21 + 6 = -15
-5x = -15

Divide each side by '-5'.
x = 3

Simplifying
x = 3

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