x-3+8x+21=180

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Solution for x-3+8x+21=180 equation:


Simplifying
x + -3 + 8x + 21 = 180

Reorder the terms:
-3 + 21 + x + 8x = 180

Combine like terms: -3 + 21 = 18
18 + x + 8x = 180

Combine like terms: x + 8x = 9x
18 + 9x = 180

Solving
18 + 9x = 180

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + 9x = 180 + -18

Combine like terms: 18 + -18 = 0
0 + 9x = 180 + -18
9x = 180 + -18

Combine like terms: 180 + -18 = 162
9x = 162

Divide each side by '9'.
x = 18

Simplifying
x = 18

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