88 -> 90 - 2
31 -> 30 + 1
88 + 31 = (90-2) + (30+1) = 90 + 30 - 2 + 1 = 120 - 2 + 1 = 120 - 1 = 119
add 2 to both 88 and 31 (so that you are subtracting by 90) 90 - 33 = 57
For example 88 + 31 =80+30=110
88 + 31 = 119
-26
76 plus 54 plus 92 plus 88 plus 76 plus 88 plus 75 plus 93 plus 92 plus 68 plus 88 plus 76 plus 76 plus 88 plus 80 plus 70 plus 88plus 72 equal 1,440
364 + 88 + 88 = 540
100*31/88 = 35.2272727... recurring.
99 + 99 + 88 + 88 + 72 + 72 = 518
88 + 88 = 176
88 + 88 = 176
20 + 88 = 108
5 and 3/11 plus 2 and 2/358/11 plus 8/3174/33 plus 88/33262/33 simplify to a mixed number 7 and 31/33your answer is 7 and 31/33