-217=7-7(8a-8)

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Solution for -217=7-7(8a-8) equation:


Simplifying
-217 = 7 + -7(8a + -8)

Reorder the terms:
-217 = 7 + -7(-8 + 8a)
-217 = 7 + (-8 * -7 + 8a * -7)
-217 = 7 + (56 + -56a)

Combine like terms: 7 + 56 = 63
-217 = 63 + -56a

Solving
-217 = 63 + -56a

Solving for variable 'a'.

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

Add '56a' to each side of the equation.
-217 + 56a = 63 + -56a + 56a

Combine like terms: -56a + 56a = 0
-217 + 56a = 63 + 0
-217 + 56a = 63

Add '217' to each side of the equation.
-217 + 217 + 56a = 63 + 217

Combine like terms: -217 + 217 = 0
0 + 56a = 63 + 217
56a = 63 + 217

Combine like terms: 63 + 217 = 280
56a = 280

Divide each side by '56'.
a = 5

Simplifying
a = 5

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