5a-3=21-a

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Solution for 5a-3=21-a equation:


Simplifying
5a + -3 = 21 + -1a

Reorder the terms:
-3 + 5a = 21 + -1a

Solving
-3 + 5a = 21 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
-3 + 5a + a = 21 + -1a + a

Combine like terms: 5a + a = 6a
-3 + 6a = 21 + -1a + a

Combine like terms: -1a + a = 0
-3 + 6a = 21 + 0
-3 + 6a = 21

Add '3' to each side of the equation.
-3 + 3 + 6a = 21 + 3

Combine like terms: -3 + 3 = 0
0 + 6a = 21 + 3
6a = 21 + 3

Combine like terms: 21 + 3 = 24
6a = 24

Divide each side by '6'.
a = 4

Simplifying
a = 4

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