-420=4a-7(8a+8)

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Solution for -420=4a-7(8a+8) equation:


Simplifying
-420 = 4a + -7(8a + 8)

Reorder the terms:
-420 = 4a + -7(8 + 8a)
-420 = 4a + (8 * -7 + 8a * -7)
-420 = 4a + (-56 + -56a)

Reorder the terms:
-420 = -56 + 4a + -56a

Combine like terms: 4a + -56a = -52a
-420 = -56 + -52a

Solving
-420 = -56 + -52a

Solving for variable 'a'.

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

Add '52a' to each side of the equation.
-420 + 52a = -56 + -52a + 52a

Combine like terms: -52a + 52a = 0
-420 + 52a = -56 + 0
-420 + 52a = -56

Add '420' to each side of the equation.
-420 + 420 + 52a = -56 + 420

Combine like terms: -420 + 420 = 0
0 + 52a = -56 + 420
52a = -56 + 420

Combine like terms: -56 + 420 = 364
52a = 364

Divide each side by '52'.
a = 7

Simplifying
a = 7

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