1.-4/9-1/9
2.1/8-(-1/2)
3.-4 1/2-1 1/4
4.8-5 2/3
5.-3/4-(-1/3)
6.2 1/6-3
15. Cory's checking account has $75.10 on Thursday. One of her checks was cashed on Friday and her account wen down to -$13.75. what was the value of the check that was cashed?
16. The boiling point of krypton is -244.1° F. The melting point of krypton is -251° F. What is the difference between the boiling point and the melting point?

Please answer these. I'll give Brainliest!!