What don’t you understand ?
Y/4-7=3
y/4=7+3
y/4=10 /4
y=40
The solution is actually pretty simple. All you have to do is plug the numbers in corresponding the letters like a with a b with b and calculate
7). 6(6)+(5)^2-(3)^2=52
And you do the same thing with 8) you get 180
