7/4+7/3=21/12+28/12=49/12
15/2-5/3=45/6-10/6=35/6
49/12:35/6=49/12 х 6/35=49/70
49/70 х 30/100=49/7 х 1/100=7 х 0,01=0,07 ( или 7/100)
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7/4+7/3=21/12+28/12=49/12
15/2-5/3=45/6-10/6=35/6
49/12:35/6=49/12 х 6/35=49/70
49/70 х 30/100=49/7 х 1/100=7 х 0,01=0,07 ( или 7/100)