Answer:
40
Step-by-step explanation:
y = 4
z = 2
8y + 12 - 2z
8(4) + 12 - 2(2)
32 + 12 - 4
44 - 4
25
first we add 2 and5
2+5=7
when the digits are interchange the no. becomes 52
52 is greater than the original no. by 27
therefore the answer is said to be 52-27
And 52-27=25