6+y=-y

Solution for 6+y=-y equation:

Simplifying
6 + y = -1y

Solving
6 + y = -1y

Solving for variable 'y'.

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

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

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

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

Add '-6' to each side of the equation.
6 + -6 + 2y = 0 + -6

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

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

Divide each side by '2'.
y = -3

Simplifying
y = -3