Answer:
34
Step-by-step explanation:
90-56=34
#2 because it’s a Pythagorean theorem triple
Sorry I only know that one
It probably gos like this here's my answer for number 1 6/8 and 9/12. for number 3, 10/12 and 15/18.
First you have to subtract 1.3 from 0.75 which equals -0.55. Then you have to add 3/7 to 2 which equals 2 and 3/7. Then you divide 2 and 3/7 by -0.55 which equals 0.9785 and that’s your answer. Sorry I don’t know the answer for the second problem but I hope this helped.