5(4+8a)+7(4a-4)=-76

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Solution for 5(4+8a)+7(4a-4)=-76 equation:


Simplifying
5(4 + 8a) + 7(4a + -4) = -76
(4 * 5 + 8a * 5) + 7(4a + -4) = -76
(20 + 40a) + 7(4a + -4) = -76

Reorder the terms:
20 + 40a + 7(-4 + 4a) = -76
20 + 40a + (-4 * 7 + 4a * 7) = -76
20 + 40a + (-28 + 28a) = -76

Reorder the terms:
20 + -28 + 40a + 28a = -76

Combine like terms: 20 + -28 = -8
-8 + 40a + 28a = -76

Combine like terms: 40a + 28a = 68a
-8 + 68a = -76

Solving
-8 + 68a = -76

Solving for variable 'a'.

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

Add '8' to each side of the equation.
-8 + 8 + 68a = -76 + 8

Combine like terms: -8 + 8 = 0
0 + 68a = -76 + 8
68a = -76 + 8

Combine like terms: -76 + 8 = -68
68a = -68

Divide each side by '68'.
a = -1

Simplifying
a = -1

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