4x+9x-72=90-5x

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Solution for 4x+9x-72=90-5x equation:


Simplifying
4x + 9x + -72 = 90 + -5x

Reorder the terms:
-72 + 4x + 9x = 90 + -5x

Combine like terms: 4x + 9x = 13x
-72 + 13x = 90 + -5x

Solving
-72 + 13x = 90 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
-72 + 13x + 5x = 90 + -5x + 5x

Combine like terms: 13x + 5x = 18x
-72 + 18x = 90 + -5x + 5x

Combine like terms: -5x + 5x = 0
-72 + 18x = 90 + 0
-72 + 18x = 90

Add '72' to each side of the equation.
-72 + 72 + 18x = 90 + 72

Combine like terms: -72 + 72 = 0
0 + 18x = 90 + 72
18x = 90 + 72

Combine like terms: 90 + 72 = 162
18x = 162

Divide each side by '18'.
x = 9

Simplifying
x = 9

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