2(2.5+8.5a)=-25.5

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Solution for 2(2.5+8.5a)=-25.5 equation: 


Simplifying
2(2.5 + 8.5a) = -25.5
(2.5 * 2 + 8.5a * 2) = -25.5
(5 + 17a) = -25.5

Solving
5 + 17a = -25.5

Solving for variable 'a'.

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

Add '-5' to each side of the equation.
5 + -5 + 17a = -25.5 + -5

Combine like terms: 5 + -5 = 0
0 + 17a = -25.5 + -5
17a = -25.5 + -5

Combine like terms: -25.5 + -5 = -30.5
17a = -30.5

Divide each side by '17'.
a = -1.794117647

Simplifying
a = -1.794117647

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