Multiply each side by 2 to isolate y.
y +2c = 2d
Subtract 2c from each side of the equation:
y = 2d - 2c
This can also be written y = 2(d - c)
y +2c = 2d
Subtract 2c from each side of the equation:
y = 2d - 2c
This can also be written y = 2(d - c)