5a=8a+21

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Solution for 5a=8a+21 equation: 


Simplifying
5a = 8a + 21

Reorder the terms:
5a = 21 + 8a

Solving
5a = 21 + 8a

Solving for variable 'a'.

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

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

Combine like terms: 5a + -8a = -3a
-3a = 21 + 8a + -8a

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

Divide each side by '-3'.
a = -7

Simplifying
a = -7

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