-1=6+-2y

Solution for -1=6+-2y equation:

Simplifying
-1 = 6 + -2y

Solving
-1 = 6 + -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 + 2y = 6 + -2y + 2y

Combine like terms: -2y + 2y = 0
-1 + 2y = 6 + 0
-1 + 2y = 6

Add '1' to each side of the equation.
-1 + 1 + 2y = 6 + 1

Combine like terms: -1 + 1 = 0
0 + 2y = 6 + 1
2y = 6 + 1

Combine like terms: 6 + 1 = 7
2y = 7

Divide each side by '2'.
y = 3.5

Simplifying
y = 3.5