(2x+45)+(x+90)=180

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Solution for (2x+45)+(x+90)=180 equation:


Simplifying
(2x + 45) + (x + 90) = 180

Reorder the terms:
(45 + 2x) + (x + 90) = 180

Remove parenthesis around (45 + 2x)
45 + 2x + (x + 90) = 180

Reorder the terms:
45 + 2x + (90 + x) = 180

Remove parenthesis around (90 + x)
45 + 2x + 90 + x = 180

Reorder the terms:
45 + 90 + 2x + x = 180

Combine like terms: 45 + 90 = 135
135 + 2x + x = 180

Combine like terms: 2x + x = 3x
135 + 3x = 180

Solving
135 + 3x = 180

Solving for variable 'x'.

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

Add '-135' to each side of the equation.
135 + -135 + 3x = 180 + -135

Combine like terms: 135 + -135 = 0
0 + 3x = 180 + -135
3x = 180 + -135

Combine like terms: 180 + -135 = 45
3x = 45

Divide each side by '3'.
x = 15

Simplifying
x = 15

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