(X-9)+(4x+9)=90

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


Simplifying
(X + -9) + (4x + 9) = 90

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

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

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

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

Reorder the terms:
-9 + 9 + X + 4x = 90

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

Solving
X + 4x = 90

Solving for variable 'X'.

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

Add '-4x' to each side of the equation.
X + 4x + -4x = 90 + -4x

Combine like terms: 4x + -4x = 0
X + 0 = 90 + -4x
X = 90 + -4x

Simplifying
X = 90 + -4x

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