The total of z and 12 multiplied by the difference of 9 and y

[math_celebrity]

The total of z and 12 multiplied by the difference of 9 and y

The total of z and 12:
z + 12

The difference of 9 and y:
9 - y

Now we multiply z + 12 by 9 - y:
(z + 12)(9 - y)