-6.5a+7.5-8.5a=21.5

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Solution for -6.5a+7.5-8.5a=21.5 equation:


Simplifying
-6.5a + 7.5 + -8.5a = 21.5

Reorder the terms:
7.5 + -6.5a + -8.5a = 21.5

Combine like terms: -6.5a + -8.5a = -15a
7.5 + -15a = 21.5

Solving
7.5 + -15a = 21.5

Solving for variable 'a'.

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

Add '-7.5' to each side of the equation.
7.5 + -7.5 + -15a = 21.5 + -7.5

Combine like terms: 7.5 + -7.5 = 0.0
0.0 + -15a = 21.5 + -7.5
-15a = 21.5 + -7.5

Combine like terms: 21.5 + -7.5 = 14
-15a = 14

Divide each side by '-15'.
a = -0.9333333333

Simplifying
a = -0.9333333333

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