a/5 = 3/b ⇔ ab = 15
10ab - 3/5 = 150 - 3/5 = 149.4
sau daca preferi raspunsul in forma de fractie = [(150·5) - 3] /5 = 747/5
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10ab-3/5=35 succes!!!
a/5 = 3/b ⇔ ab = 15
10ab - 3/5 = 150 - 3/5 = 149.4
sau daca preferi raspunsul in forma de fractie = [(150·5) - 3] /5 = 747/5