7/10 + 8/9 =
7(9)/90 + 8(10) / 90 =
63/90 + 80/90 =
143/90 =
1 53/90
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7/9+1/9 = 8/9We know that seven cows plus one cow = eight cows, seven dollars plus one dollar = eight dollars,seven stones plus one stone = eight stones, and seven trucks plus one truck = eight trucks.Similarly we may conclude that seven hundred plus one hundred = eight hundred, andseven ninths plus one ninth = eight ninths.
Eight ninths
Eight-ninths
One-third plus three-ninths is 2/3.7/9
It is seven ninths.