Ineed to solve cy−7=5d+3y for y, any ?

For this case we have the following equation:

We must clear the value of y.

For this, we follow the following steps:

1) We place the variables on one side of the equation and the constant terms on the other side of the equation:

2) We make the common factor "y" on the left side of the equation:

3) We move to divide c-3 on the right side of the equation:

The value of y is given by:

you have 6 cupcakes