Simplify and show your work: -5/8 + 2/3 The next three questions refer to the information below. Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} A = {2, 3, 4, 7, 8, 9} B = {7, 6, 5, 4, 3} Use curly set brackets and write out the complement of A, called A'. Use curly set brackets and write out A B Use curly set brackets and write out A B Divide and show your work: 5/12 -4/9