-89=-8(a+7)-3a

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Solution for -89=-8(a+7)-3a equation:


Simplifying
-89 = -8(a + 7) + -3a

Reorder the terms:
-89 = -8(7 + a) + -3a
-89 = (7 * -8 + a * -8) + -3a
-89 = (-56 + -8a) + -3a

Combine like terms: -8a + -3a = -11a
-89 = -56 + -11a

Solving
-89 = -56 + -11a

Solving for variable 'a'.

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

Add '11a' to each side of the equation.
-89 + 11a = -56 + -11a + 11a

Combine like terms: -11a + 11a = 0
-89 + 11a = -56 + 0
-89 + 11a = -56

Add '89' to each side of the equation.
-89 + 89 + 11a = -56 + 89

Combine like terms: -89 + 89 = 0
0 + 11a = -56 + 89
11a = -56 + 89

Combine like terms: -56 + 89 = 33
11a = 33

Divide each side by '11'.
a = 3

Simplifying
a = 3

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