5a-3=21

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Solution for 5a-3=21 equation: 


Simplifying
5a + -3 = 21

Reorder the terms:
-3 + 5a = 21

Solving
-3 + 5a = 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 + 5a = 21 + 3

Combine like terms: -3 + 3 = 0
0 + 5a = 21 + 3
5a = 21 + 3

Combine like terms: 21 + 3 = 24
5a = 24

Divide each side by '5'.
a = 4.8

Simplifying
a = 4.8

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