What is the solution to the equation ● x= -1, x=11● x= -1 ● x= 11● no solution

I'm so close to finishing all these.

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1