4a-8b=-20

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Solution for 4a-8b=-20 equation: 


Simplifying
4a + -8b = -20

Solving
4a + -8b = -20

Solving for variable 'a'.

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

Add '8b' to each side of the equation.
4a + -8b + 8b = -20 + 8b

Combine like terms: -8b + 8b = 0
4a + 0 = -20 + 8b
4a = -20 + 8b

Divide each side by '4'.
a = -5 + 2b

Simplifying
a = -5 + 2b

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