3x+30+6x+15=180

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Solution for 3x+30+6x+15=180 equation:


Simplifying
3x + 30 + 6x + 15 = 180

Reorder the terms:
30 + 15 + 3x + 6x = 180

Combine like terms: 30 + 15 = 45
45 + 3x + 6x = 180

Combine like terms: 3x + 6x = 9x
45 + 9x = 180

Solving
45 + 9x = 180

Solving for variable 'x'.

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

Add '-45' to each side of the equation.
45 + -45 + 9x = 180 + -45

Combine like terms: 45 + -45 = 0
0 + 9x = 180 + -45
9x = 180 + -45

Combine like terms: 180 + -45 = 135
9x = 135

Divide each side by '9'.
x = 15

Simplifying
x = 15

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