(12x+5)+(9x+7)=180

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Solution for (12x+5)+(9x+7)=180 equation:


Simplifying
(12x + 5) + (9x + 7) = 180

Reorder the terms:
(5 + 12x) + (9x + 7) = 180

Remove parenthesis around (5 + 12x)
5 + 12x + (9x + 7) = 180

Reorder the terms:
5 + 12x + (7 + 9x) = 180

Remove parenthesis around (7 + 9x)
5 + 12x + 7 + 9x = 180

Reorder the terms:
5 + 7 + 12x + 9x = 180

Combine like terms: 5 + 7 = 12
12 + 12x + 9x = 180

Combine like terms: 12x + 9x = 21x
12 + 21x = 180

Solving
12 + 21x = 180

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 21x = 180 + -12

Combine like terms: 12 + -12 = 0
0 + 21x = 180 + -12
21x = 180 + -12

Combine like terms: 180 + -12 = 168
21x = 168

Divide each side by '21'.
x = 8

Simplifying
x = 8

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