-216=8+8(4-8a)

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Solution for -216=8+8(4-8a) equation:


Simplifying
-216 = 8 + 8(4 + -8a)
-216 = 8 + (4 * 8 + -8a * 8)
-216 = 8 + (32 + -64a)

Combine like terms: 8 + 32 = 40
-216 = 40 + -64a

Solving
-216 = 40 + -64a

Solving for variable 'a'.

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

Add '64a' to each side of the equation.
-216 + 64a = 40 + -64a + 64a

Combine like terms: -64a + 64a = 0
-216 + 64a = 40 + 0
-216 + 64a = 40

Add '216' to each side of the equation.
-216 + 216 + 64a = 40 + 216

Combine like terms: -216 + 216 = 0
0 + 64a = 40 + 216
64a = 40 + 216

Combine like terms: 40 + 216 = 256
64a = 256

Divide each side by '64'.
a = 4

Simplifying
a = 4

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