Hey there!


when x = 3 and y = 9
Let's first move to x and y.

Now multiply 5 by x and y(3+9).

Now we have the number 2 left, so we have to multiply 60 by 2.


Hope this helps!

Basically, this is saying that 80% of (x) = 2 so you have know what the whole would be. It would be 2.5 because 80% of 2.5 is 2. So because you are subtracting 7 from v to get 2.5, you have to add 2.5 to 7 to get v. V=9.5
Because there's times when u need to double for instance a cup so u have to add one morecup