4a-20=3a

Solution for 4a-20=3a equation:

Simplifying
4a + -20 = 3a

Reorder the terms:
-20 + 4a = 3a

Solving
-20 + 4a = 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.
-20 + 4a + -3a = 3a + -3a

Combine like terms: 4a + -3a = 1a
-20 + 1a = 3a + -3a

Combine like terms: 3a + -3a = 0
-20 + 1a = 0

Add '20' to each side of the equation.
-20 + 20 + 1a = 0 + 20

Combine like terms: -20 + 20 = 0
0 + 1a = 0 + 20
1a = 0 + 20

Combine like terms: 0 + 20 = 20
1a = 20

Divide each side by '1'.
a = 20

Simplifying
a = 20