-25.5=8.5(2.5a-4.5)

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Solution for -25.5=8.5(2.5a-4.5) equation: 


Simplifying
-25.5 = 8.5(2.5a + -4.5)

Reorder the terms:
-25.5 = 8.5(-4.5 + 2.5a)
-25.5 = (-4.5 * 8.5 + 2.5a * 8.5)
-25.5 = (-38.25 + 21.25a)

Solving
-25.5 = -38.25 + 21.25a

Solving for variable 'a'.

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

Add '-21.25a' to each side of the equation.
-25.5 + -21.25a = -38.25 + 21.25a + -21.25a

Combine like terms: 21.25a + -21.25a = 0.00
-25.5 + -21.25a = -38.25 + 0.00
-25.5 + -21.25a = -38.25

Add '25.5' to each side of the equation.
-25.5 + 25.5 + -21.25a = -38.25 + 25.5

Combine like terms: -25.5 + 25.5 = 0.0
0.0 + -21.25a = -38.25 + 25.5
-21.25a = -38.25 + 25.5

Combine like terms: -38.25 + 25.5 = -12.75
-21.25a = -12.75

Divide each side by '-21.25'.
a = 0.6

Simplifying
a = 0.6

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