3x-30=2x-9

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Solution for 3x-30=2x-9 equation:


Simplifying
3x + -30 = 2x + -9

Reorder the terms:
-30 + 3x = 2x + -9

Reorder the terms:
-30 + 3x = -9 + 2x

Solving
-30 + 3x = -9 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
-30 + 3x + -2x = -9 + 2x + -2x

Combine like terms: 3x + -2x = 1x
-30 + 1x = -9 + 2x + -2x

Combine like terms: 2x + -2x = 0
-30 + 1x = -9 + 0
-30 + 1x = -9

Add '30' to each side of the equation.
-30 + 30 + 1x = -9 + 30

Combine like terms: -30 + 30 = 0
0 + 1x = -9 + 30
1x = -9 + 30

Combine like terms: -9 + 30 = 21
1x = 21

Divide each side by '1'.
x = 21

Simplifying
x = 21

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