Mrs. jayde is baking 9 cakes for a bake sale. the cake recipe calls for 3/8 cup of sugar for each cake how many cups of sugar does she need in all?

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.