4a-45=a

Solution for 4a-45=a equation:

Simplifying
4a + -45 = a

Reorder the terms:
-45 + 4a = a

Solving
-45 + 4a = 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.
-45 + 4a + -1a = a + -1a

Combine like terms: 4a + -1a = 3a
-45 + 3a = a + -1a

Combine like terms: a + -1a = 0
-45 + 3a = 0

Add '45' to each side of the equation.
-45 + 45 + 3a = 0 + 45

Combine like terms: -45 + 45 = 0
0 + 3a = 0 + 45
3a = 0 + 45

Combine like terms: 0 + 45 = 45
3a = 45

Divide each side by '3'.
a = 15

Simplifying
a = 15