5a+3+6a-12+90=180

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Solution for 5a+3+6a-12+90=180 equation: 


Simplifying
5a + 3 + 6a + -12 + 90 = 180

Reorder the terms:
3 + -12 + 90 + 5a + 6a = 180

Combine like terms: 3 + -12 = -9
-9 + 90 + 5a + 6a = 180

Combine like terms: -9 + 90 = 81
81 + 5a + 6a = 180

Combine like terms: 5a + 6a = 11a
81 + 11a = 180

Solving
81 + 11a = 180

Solving for variable 'a'.

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

Add '-81' to each side of the equation.
81 + -81 + 11a = 180 + -81

Combine like terms: 81 + -81 = 0
0 + 11a = 180 + -81
11a = 180 + -81

Combine like terms: 180 + -81 = 99
11a = 99

Divide each side by '11'.
a = 9

Simplifying
a = 9

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