(8x+21)+(7x-6)=180

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Solution for (8x+21)+(7x-6)=180 equation:


Simplifying
(8x + 21) + (7x + -6) = 180

Reorder the terms:
(21 + 8x) + (7x + -6) = 180

Remove parenthesis around (21 + 8x)
21 + 8x + (7x + -6) = 180

Reorder the terms:
21 + 8x + (-6 + 7x) = 180

Remove parenthesis around (-6 + 7x)
21 + 8x + -6 + 7x = 180

Reorder the terms:
21 + -6 + 8x + 7x = 180

Combine like terms: 21 + -6 = 15
15 + 8x + 7x = 180

Combine like terms: 8x + 7x = 15x
15 + 15x = 180

Solving
15 + 15x = 180

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 + 15x = 180 + -15

Combine like terms: 15 + -15 = 0
0 + 15x = 180 + -15
15x = 180 + -15

Combine like terms: 180 + -15 = 165
15x = 165

Divide each side by '15'.
x = 11

Simplifying
x = 11

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