a-(-8b)=3

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Solution for a-(-8b)=3 equation: 


Simplifying
a + -1(-8b) = 3

Remove parenthesis around (-8b)
a + -1 * -8b = 3

Multiply -1 * -8
a + 8b = 3

Solving
a + 8b = 3

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.
a + 8b + -8b = 3 + -8b

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

Simplifying
a = 3 + -8b

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