What is 1 1/2 - 3 5/7?

Which equation requires the division property of equality to be solved?

If you can solve all of these i will give ! - 4% of 190 - 4% of 162.5 - 4% of 140 - a 4% increase from 155.1 - a 4% increase from 159.8

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)