-8a+3=-21

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Solution for -8a+3=-21 equation: 


Simplifying
-8a + 3 = -21

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

Solving
3 + -8a = -21

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + -8a = -21 + -3

Combine like terms: 3 + -3 = 0
0 + -8a = -21 + -3
-8a = -21 + -3

Combine like terms: -21 + -3 = -24
-8a = -24

Divide each side by '-8'.
a = 3

Simplifying
a = 3

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