-20+8a+(-4a)-4=

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Solution for -20+8a+(-4a)-4= equation:


Simplifying
-20 + 8a + (-4a) + -4 = 0

Reorder the terms:
-20 + -4 + 8a + (-4a) = 0

Combine like terms: -20 + -4 = -24
-24 + 8a + (-4a) = 0

Combine like terms: 8a + (-4a) = 4a
-24 + 4a = 0

Solving
-24 + 4a = 0

Solving for variable 'a'.

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

Add '24' to each side of the equation.
-24 + 24 + 4a = 0 + 24

Combine like terms: -24 + 24 = 0
0 + 4a = 0 + 24
4a = 0 + 24

Combine like terms: 0 + 24 = 24
4a = 24

Divide each side by '4'.
a = 6

Simplifying
a = 6

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