20-4(10a-4)=-20(3a+1)-4

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Solution for 20-4(10a-4)=-20(3a+1)-4 equation:


Simplifying
20 + -4(10a + -4) = -20(3a + 1) + -4

Reorder the terms:
20 + -4(-4 + 10a) = -20(3a + 1) + -4
20 + (-4 * -4 + 10a * -4) = -20(3a + 1) + -4
20 + (16 + -40a) = -20(3a + 1) + -4

Combine like terms: 20 + 16 = 36
36 + -40a = -20(3a + 1) + -4

Reorder the terms:
36 + -40a = -20(1 + 3a) + -4
36 + -40a = (1 * -20 + 3a * -20) + -4
36 + -40a = (-20 + -60a) + -4

Reorder the terms:
36 + -40a = -20 + -4 + -60a

Combine like terms: -20 + -4 = -24
36 + -40a = -24 + -60a

Solving
36 + -40a = -24 + -60a

Solving for variable 'a'.

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

Add '60a' to each side of the equation.
36 + -40a + 60a = -24 + -60a + 60a

Combine like terms: -40a + 60a = 20a
36 + 20a = -24 + -60a + 60a

Combine like terms: -60a + 60a = 0
36 + 20a = -24 + 0
36 + 20a = -24

Add '-36' to each side of the equation.
36 + -36 + 20a = -24 + -36

Combine like terms: 36 + -36 = 0
0 + 20a = -24 + -36
20a = -24 + -36

Combine like terms: -24 + -36 = -60
20a = -60

Divide each side by '20'.
a = -3

Simplifying
a = -3

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