-100=-7(a+8)-4a

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Solution for -100=-7(a+8)-4a equation:


Simplifying
-100 = -7(a + 8) + -4a

Reorder the terms:
-100 = -7(8 + a) + -4a
-100 = (8 * -7 + a * -7) + -4a
-100 = (-56 + -7a) + -4a

Combine like terms: -7a + -4a = -11a
-100 = -56 + -11a

Solving
-100 = -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.
-100 + 11a = -56 + -11a + 11a

Combine like terms: -11a + 11a = 0
-100 + 11a = -56 + 0
-100 + 11a = -56

Add '100' to each side of the equation.
-100 + 100 + 11a = -56 + 100

Combine like terms: -100 + 100 = 0
0 + 11a = -56 + 100
11a = -56 + 100

Combine like terms: -56 + 100 = 44
11a = 44

Divide each side by '11'.
a = 4

Simplifying
a = 4

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