-30-30a=-8(5a-7)

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Solution for -30-30a=-8(5a-7) equation:


Simplifying
-30 + -30a = -8(5a + -7)

Reorder the terms:
-30 + -30a = -8(-7 + 5a)
-30 + -30a = (-7 * -8 + 5a * -8)
-30 + -30a = (56 + -40a)

Solving
-30 + -30a = 56 + -40a

Solving for variable 'a'.

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

Add '40a' to each side of the equation.
-30 + -30a + 40a = 56 + -40a + 40a

Combine like terms: -30a + 40a = 10a
-30 + 10a = 56 + -40a + 40a

Combine like terms: -40a + 40a = 0
-30 + 10a = 56 + 0
-30 + 10a = 56

Add '30' to each side of the equation.
-30 + 30 + 10a = 56 + 30

Combine like terms: -30 + 30 = 0
0 + 10a = 56 + 30
10a = 56 + 30

Combine like terms: 56 + 30 = 86
10a = 86

Divide each side by '10'.
a = 8.6

Simplifying
a = 8.6

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