3a-1=4a

Solution for 3a-1=4a equation:

Simplifying
3a + -1 = 4a

Reorder the terms:
-1 + 3a = 4a

Solving
-1 + 3a = 4a

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
-1 + 3a + -4a = 4a + -4a

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

Combine like terms: 4a + -4a = 0
-1 + -1a = 0

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

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

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

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

Simplifying
a = -1