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Calculați b. (3/1 x 4 + 3/4 x7 + 3/7+10+..........+3/25 x 28) - (4/1 x 5+ 4/5 x 9 + 4/9 x 13+....+4/25 x 29)​

Calculați B 31 X 4 34 X7 3710325 X 28 41 X 5 45 X 9 49 X 13425 X 29 class=