0
Anonymous
8/18
factor out a 2
= 4/9
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8/18 = 4/9
17/18 − 13/8 = -31/72
4/9 x 2/2 = 8/18 5/18 + 8/18 = 13/18
8/9 + 1/2 = 16/18 + 9/18 = 25/18
No, 10/5 and 18/8 are not equivalent, because 10/5 is 2, and 18/8 is 2 1/4