-84=-8a-7(6-2a)

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Solution for -84=-8a-7(6-2a) equation:


Simplifying
-84 = -8a + -7(6 + -2a)
-84 = -8a + (6 * -7 + -2a * -7)
-84 = -8a + (-42 + 14a)

Reorder the terms:
-84 = -42 + -8a + 14a

Combine like terms: -8a + 14a = 6a
-84 = -42 + 6a

Solving
-84 = -42 + 6a

Solving for variable 'a'.

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

Add '-6a' to each side of the equation.
-84 + -6a = -42 + 6a + -6a

Combine like terms: 6a + -6a = 0
-84 + -6a = -42 + 0
-84 + -6a = -42

Add '84' to each side of the equation.
-84 + 84 + -6a = -42 + 84

Combine like terms: -84 + 84 = 0
0 + -6a = -42 + 84
-6a = -42 + 84

Combine like terms: -42 + 84 = 42
-6a = 42

Divide each side by '-6'.
a = -7

Simplifying
a = -7

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