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q = 2 1/4
r = 3 1/2
p - q : r = 10 2/7 - 2 1/4 : 3 1/2
= 72/7 - 9/4 : 7/2
= 72/7 - 9/4 × 2/7
= 72/7 - 9/14
= 144/14 - 9/14
= 135/14
= 9 9/14...........(B)
maaf kalo salah