78-2x=3x+9

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Solution for 78-2x=3x+9 equation:


Simplifying
78 + -2x = 3x + 9

Reorder the terms:
78 + -2x = 9 + 3x

Solving
78 + -2x = 9 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
78 + -2x + -3x = 9 + 3x + -3x

Combine like terms: -2x + -3x = -5x
78 + -5x = 9 + 3x + -3x

Combine like terms: 3x + -3x = 0
78 + -5x = 9 + 0
78 + -5x = 9

Add '-78' to each side of the equation.
78 + -78 + -5x = 9 + -78

Combine like terms: 78 + -78 = 0
0 + -5x = 9 + -78
-5x = 9 + -78

Combine like terms: 9 + -78 = -69
-5x = -69

Divide each side by '-5'.
x = 13.8

Simplifying
x = 13.8

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