1 - 8/9 = 1/9
1 - 8 - 9 = -16
4 13/20 + 3 3/5 = 93/20 + 18/5 = 93/20 + 72/20 = 165/20 = 33/5 = 6 3/5
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1 - 8/9 = 1/9
1 - 8 - 9 = -16
4 13/20 + 3 3/5 = 93/20 + 18/5 = 93/20 + 72/20 = 165/20 = 33/5 = 6 3/5