a-3=13-3a

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Solution for a-3=13-3a equation:


Simplifying
a + -3 = 13 + -3a

Reorder the terms:
-3 + a = 13 + -3a

Solving
-3 + a = 13 + -3a

Solving for variable 'a'.

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

Add '3a' to each side of the equation.
-3 + a + 3a = 13 + -3a + 3a

Combine like terms: a + 3a = 4a
-3 + 4a = 13 + -3a + 3a

Combine like terms: -3a + 3a = 0
-3 + 4a = 13 + 0
-3 + 4a = 13

Add '3' to each side of the equation.
-3 + 3 + 4a = 13 + 3

Combine like terms: -3 + 3 = 0
0 + 4a = 13 + 3
4a = 13 + 3

Combine like terms: 13 + 3 = 16
4a = 16

Divide each side by '4'.
a = 4

Simplifying
a = 4

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