(7x-9)+(2X)=90

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Solution for (7x-9)+(2X)=90 equation: 


Simplifying
(7x + -9) + (2X) = 90

Reorder the terms:
(-9 + 7x) + (2X) = 90

Remove parenthesis around (-9 + 7x)
-9 + 7x + (2X) = 90

Reorder the terms:
-9 + (2X) + 7x = 90

Solving
-9 + (2X) + 7x = 90

Solving for variable 'X'.

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

Add '9' to each side of the equation.
-9 + (2X) + 9 + 7x = 90 + 9

Reorder the terms:
-9 + 9 + (2X) + 7x = 90 + 9

Combine like terms: -9 + 9 = 0
0 + (2X) + 7x = 90 + 9
(2X) + 7x = 90 + 9

Combine like terms: 90 + 9 = 99
(2X) + 7x = 99

Add '-7x' to each side of the equation.
(2X) + 7x + -7x = 99 + -7x

Combine like terms: 7x + -7x = 0
(2X) + 0 = 99 + -7x
(2X) = 99 + -7x

Divide each side by '2'.
X = 49.5 + -3.5x

Simplifying
X = 49.5 + -3.5x

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