-16
7 + 2 + 6 + 1 = 16
16 + 15 = 31
32
1/2+1/4+1/8+1/16 give all the fractions the same denominator =8/16+4/16+2/16+1/16 add them up =12/16+3/16 =15/16 hope it helped (:
15/16
16
30
8 + 16 - 8 + 4 + 13 = -1
i would show my work but that WOULD BE SO BORING so the answer is fifteen over sixteen. 1/2 + 1/4 + 1/8 + 1/16 = gotta convert them all to 16ths. 8/16 + 4/16 + 2/16 + 1/16 = 15/16. later people
7.5 + 7.5 + 1 = 16
1/2 + 1/4 + 1/8 + 1/16 We need to multiply those so all the denominators (bottom numbers) are the same (16). 1/2 * 8/8 + 1/4 * 4/4 + 1/8 * 2/2 + 1/16 8/16 + 4/16 + 2/16 + 1/16 Now we add the numerators and keep the same denominator. 12/16 + 3/16 = 15/16