3y-1=3+y

Solution for 3y-1=3+y equation:

Simplifying
3y + -1 = 3 + y

Reorder the terms:
-1 + 3y = 3 + y

Solving
-1 + 3y = 3 + y

Solving for variable 'y'.

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

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

Combine like terms: 3y + -1y = 2y
-1 + 2y = 3 + y + -1y

Combine like terms: y + -1y = 0
-1 + 2y = 3 + 0
-1 + 2y = 3

Add '1' to each side of the equation.
-1 + 1 + 2y = 3 + 1

Combine like terms: -1 + 1 = 0
0 + 2y = 3 + 1
2y = 3 + 1

Combine like terms: 3 + 1 = 4
2y = 4

Divide each side by '2'.
y = 2

Simplifying
y = 2