(4a-8)+(8a-9)=180

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Solution for (4a-8)+(8a-9)=180 equation:


Simplifying
(4a + -8) + (8a + -9) = 180

Reorder the terms:
(-8 + 4a) + (8a + -9) = 180

Remove parenthesis around (-8 + 4a)
-8 + 4a + (8a + -9) = 180

Reorder the terms:
-8 + 4a + (-9 + 8a) = 180

Remove parenthesis around (-9 + 8a)
-8 + 4a + -9 + 8a = 180

Reorder the terms:
-8 + -9 + 4a + 8a = 180

Combine like terms: -8 + -9 = -17
-17 + 4a + 8a = 180

Combine like terms: 4a + 8a = 12a
-17 + 12a = 180

Solving
-17 + 12a = 180

Solving for variable 'a'.

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

Add '17' to each side of the equation.
-17 + 17 + 12a = 180 + 17

Combine like terms: -17 + 17 = 0
0 + 12a = 180 + 17
12a = 180 + 17

Combine like terms: 180 + 17 = 197
12a = 197

Divide each side by '12'.
a = 16.41666667

Simplifying
a = 16.41666667

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