we can't see all full 4 options, but if this is the full option, than the very left one is correct:
-2/5 * -3 3/4
remake the question, adding a picture of all the question, or write down the full left and right answers.
this would be 35. 35 + 5 = 40. you take the known constant and subtract by the answer of the equation and you get y.