I’m guessing 108. 45 divided by 5 is 9, so 9 times 12 is 108.
It could be 28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43, or 44.
A + b = 15 ..... eq 1
a – b = 12 ...... eq 2
So a = 15 – b
Substitute in eq 2 :
15 – b – b = 12
15 – 2b = 12
–2b = 12 – 15
b = 1.5
So a = 15 – 3/2 = 13.5
4ab = 4 x 13.5 x 1.5 = 81
Answer:
Its 290 even though you got the answer im out here to help