3=3+a

Solution for 3=3+a equation:

Simplifying
3 = 3 + a

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

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

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

Solving
0 = a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
0 + -1a = a + -1a
Remove the zero:
-1a = a + -1a

Combine like terms: a + -1a = 0
-1a = 0

Divide each side by '-1'.
a = 0

Simplifying
a = 0