8a-21=-5

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Solution for 8a-21=-5 equation: 


Simplifying
8a + -21 = -5

Reorder the terms:
-21 + 8a = -5

Solving
-21 + 8a = -5

Solving for variable 'a'.

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

Add '21' to each side of the equation.
-21 + 21 + 8a = -5 + 21

Combine like terms: -21 + 21 = 0
0 + 8a = -5 + 21
8a = -5 + 21

Combine like terms: -5 + 21 = 16
8a = 16

Divide each side by '8'.
a = 2

Simplifying
a = 2

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