What's does y equal to x=3-3y

Solve for y by simplifying both sides of the equation, then isolating the variable.

y = 1 - x/3

Beginning with x=3-3y and solving for y, the first step would be to move the constant 3 to the opposite side of the equation by subtracting it from both sides, which leaves x-3 = - 3y.

Now divide both sides by the coefficient of y, which is - 3 to get (x-3) / - 3 = y

This could be rewritten as - (1/3) * (x-3) = y or - x/3 + 1 = y