(5x+9)+(4x-9)+90=180

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Solution for (5x+9)+(4x-9)+90=180 equation:


Simplifying
(5x + 9) + (4x + -9) + 90 = 180

Reorder the terms:
(9 + 5x) + (4x + -9) + 90 = 180

Remove parenthesis around (9 + 5x)
9 + 5x + (4x + -9) + 90 = 180

Reorder the terms:
9 + 5x + (-9 + 4x) + 90 = 180

Remove parenthesis around (-9 + 4x)
9 + 5x + -9 + 4x + 90 = 180

Reorder the terms:
9 + -9 + 90 + 5x + 4x = 180

Combine like terms: 9 + -9 = 0
0 + 90 + 5x + 4x = 180
90 + 5x + 4x = 180

Combine like terms: 5x + 4x = 9x
90 + 9x = 180

Solving
90 + 9x = 180

Solving for variable 'x'.

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

Add '-90' to each side of the equation.
90 + -90 + 9x = 180 + -90

Combine like terms: 90 + -90 = 0
0 + 9x = 180 + -90
9x = 180 + -90

Combine like terms: 180 + -90 = 90
9x = 90

Divide each side by '9'.
x = 10

Simplifying
x = 10

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