4x-9x+72=3x+40

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Solution for 4x-9x+72=3x+40 equation:


Simplifying
4x + -9x + 72 = 3x + 40

Reorder the terms:
72 + 4x + -9x = 3x + 40

Combine like terms: 4x + -9x = -5x
72 + -5x = 3x + 40

Reorder the terms:
72 + -5x = 40 + 3x

Solving
72 + -5x = 40 + 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.
72 + -5x + -3x = 40 + 3x + -3x

Combine like terms: -5x + -3x = -8x
72 + -8x = 40 + 3x + -3x

Combine like terms: 3x + -3x = 0
72 + -8x = 40 + 0
72 + -8x = 40

Add '-72' to each side of the equation.
72 + -72 + -8x = 40 + -72

Combine like terms: 72 + -72 = 0
0 + -8x = 40 + -72
-8x = 40 + -72

Combine like terms: 40 + -72 = -32
-8x = -32

Divide each side by '-8'.
x = 4

Simplifying
x = 4

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