a-4(-5a-2)=12a-3

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Solution for a-4(-5a-2)=12a-3 equation:


Simplifying
a + -4(-5a + -2) = 12a + -3

Reorder the terms:
a + -4(-2 + -5a) = 12a + -3
a + (-2 * -4 + -5a * -4) = 12a + -3
a + (8 + 20a) = 12a + -3

Reorder the terms:
8 + a + 20a = 12a + -3

Combine like terms: a + 20a = 21a
8 + 21a = 12a + -3

Reorder the terms:
8 + 21a = -3 + 12a

Solving
8 + 21a = -3 + 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 + 21a + -12a = -3 + 12a + -12a

Combine like terms: 21a + -12a = 9a
8 + 9a = -3 + 12a + -12a

Combine like terms: 12a + -12a = 0
8 + 9a = -3 + 0
8 + 9a = -3

Add '-8' to each side of the equation.
8 + -8 + 9a = -3 + -8

Combine like terms: 8 + -8 = 0
0 + 9a = -3 + -8
9a = -3 + -8

Combine like terms: -3 + -8 = -11
9a = -11

Divide each side by '9'.
a = -1.222222222

Simplifying
a = -1.222222222

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