8a-4(-5a-2)=12a

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Solution for 8a-4(-5a-2)=12a equation:


Simplifying
8a + -4(-5a + -2) = 12a

Reorder the terms:
8a + -4(-2 + -5a) = 12a
8a + (-2 * -4 + -5a * -4) = 12a
8a + (8 + 20a) = 12a

Reorder the terms:
8 + 8a + 20a = 12a

Combine like terms: 8a + 20a = 28a
8 + 28a = 12a

Solving
8 + 28a = 12a

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
8 + 28a + -12a = 12a + -12a

Combine like terms: 28a + -12a = 16a
8 + 16a = 12a + -12a

Combine like terms: 12a + -12a = 0
8 + 16a = 0

Add '-8' to each side of the equation.
8 + -8 + 16a = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 16a = 0 + -8
16a = 0 + -8

Combine like terms: 0 + -8 = -8
16a = -8

Divide each side by '16'.
a = -0.5

Simplifying
a = -0.5

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