-5(4a+5)-5(4a-6)=-115

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Solution for -5(4a+5)-5(4a-6)=-115 equation:


Simplifying
-5(4a + 5) + -5(4a + -6) = -115

Reorder the terms:
-5(5 + 4a) + -5(4a + -6) = -115
(5 * -5 + 4a * -5) + -5(4a + -6) = -115
(-25 + -20a) + -5(4a + -6) = -115

Reorder the terms:
-25 + -20a + -5(-6 + 4a) = -115
-25 + -20a + (-6 * -5 + 4a * -5) = -115
-25 + -20a + (30 + -20a) = -115

Reorder the terms:
-25 + 30 + -20a + -20a = -115

Combine like terms: -25 + 30 = 5
5 + -20a + -20a = -115

Combine like terms: -20a + -20a = -40a
5 + -40a = -115

Solving
5 + -40a = -115

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 + -40a = -115 + -5

Combine like terms: 5 + -5 = 0
0 + -40a = -115 + -5
-40a = -115 + -5

Combine like terms: -115 + -5 = -120
-40a = -120

Divide each side by '-40'.
a = 3

Simplifying
a = 3

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