(16x-9)+(4x+9)=90

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Solution for (16x-9)+(4x+9)=90 equation: 


Simplifying
(16x + -9) + (4x + 9) = 90

Reorder the terms:
(-9 + 16x) + (4x + 9) = 90

Remove parenthesis around (-9 + 16x)
-9 + 16x + (4x + 9) = 90

Reorder the terms:
-9 + 16x + (9 + 4x) = 90

Remove parenthesis around (9 + 4x)
-9 + 16x + 9 + 4x = 90

Reorder the terms:
-9 + 9 + 16x + 4x = 90

Combine like terms: -9 + 9 = 0
0 + 16x + 4x = 90
16x + 4x = 90

Combine like terms: 16x + 4x = 20x
20x = 90

Solving
20x = 90

Solving for variable 'x'.

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

Divide each side by '20'.
x = 4.5

Simplifying
x = 4.5

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