y-1=2y

Solution for y-1=2y equation:

Simplifying
y + -1 = 2y

Reorder the terms:
-1 + y = 2y

Solving
-1 + y = 2y

Solving for variable 'y'.

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

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

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

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

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

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

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

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

Simplifying
y = -1