(3x+5)+(5x+15)=180

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Solution for (3x+5)+(5x+15)=180 equation:


Simplifying
(3x + 5) + (5x + 15) = 180

Reorder the terms:
(5 + 3x) + (5x + 15) = 180

Remove parenthesis around (5 + 3x)
5 + 3x + (5x + 15) = 180

Reorder the terms:
5 + 3x + (15 + 5x) = 180

Remove parenthesis around (15 + 5x)
5 + 3x + 15 + 5x = 180

Reorder the terms:
5 + 15 + 3x + 5x = 180

Combine like terms: 5 + 15 = 20
20 + 3x + 5x = 180

Combine like terms: 3x + 5x = 8x
20 + 8x = 180

Solving
20 + 8x = 180

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + 8x = 180 + -20

Combine like terms: 20 + -20 = 0
0 + 8x = 180 + -20
8x = 180 + -20

Combine like terms: 180 + -20 = 160
8x = 160

Divide each side by '8'.
x = 20

Simplifying
x = 20

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