please solve it for me
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Step-by-step explanation:
1+3/4 = 4/4 + 3/4 = 7/4
2+ 1/7 = 14/7 + 1/7 = 15/7
4 + 4/5 = 20/5 + 4/5 = 24/5
7/4 x 15/7 x 24/5 = 18
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