(2x+6)+(x+9)=90

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Solution for (2x+6)+(x+9)=90 equation:


Simplifying
(2x + 6) + (x + 9) = 90

Reorder the terms:
(6 + 2x) + (x + 9) = 90

Remove parenthesis around (6 + 2x)
6 + 2x + (x + 9) = 90

Reorder the terms:
6 + 2x + (9 + x) = 90

Remove parenthesis around (9 + x)
6 + 2x + 9 + x = 90

Reorder the terms:
6 + 9 + 2x + x = 90

Combine like terms: 6 + 9 = 15
15 + 2x + x = 90

Combine like terms: 2x + x = 3x
15 + 3x = 90

Solving
15 + 3x = 90

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + 3x = 90 + -15

Combine like terms: 15 + -15 = 0
0 + 3x = 90 + -15
3x = 90 + -15

Combine like terms: 90 + -15 = 75
3x = 75

Divide each side by '3'.
x = 25

Simplifying
x = 25

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