-9(2.5a+6.5)=22.5

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Solution for -9(2.5a+6.5)=22.5 equation: 


Simplifying
-9(2.5a + 6.5) = 22.5

Reorder the terms:
-9(6.5 + 2.5a) = 22.5
(6.5 * -9 + 2.5a * -9) = 22.5
(-58.5 + -22.5a) = 22.5

Solving
-58.5 + -22.5a = 22.5

Solving for variable 'a'.

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

Add '58.5' to each side of the equation.
-58.5 + 58.5 + -22.5a = 22.5 + 58.5

Combine like terms: -58.5 + 58.5 = 0.0
0.0 + -22.5a = 22.5 + 58.5
-22.5a = 22.5 + 58.5

Combine like terms: 22.5 + 58.5 = 81
-22.5a = 81

Divide each side by '-22.5'.
a = -3.6

Simplifying
a = -3.6

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