15. would be 1/2 because if you simplify 16/32 to 8/16 (dividing by 2 each time), then to 4/8, then 2/4, and lastly 1/2
you really dont need to do all of that because 16/32 is already 1/2 (16 is half of
32)
16. the answer would be 7/12 because if you divide 21/36 both by 3 you get 7/12 and you cant go any more simpler.
Multiply first, then add. 12 times 7 = 84. Then add 8. 84 + 8 = 92.
Write it as 0.35. Hope it helps.
The answer would be 7 to the 11th power
when multiplying exponents, just add the exponents together
6 + 5 = 11 :)