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7. Efectuați: b) 416:4–5 (361:19–256:32); a) (25.6-1300:13):10-676:169; c) 720:90+(2-19-2∙16) 12-36:6; d) [35-3-(67+33)]∙10; e) 1+2+{3+4 [5+6 (216:36-54:9)]}; f) [(319+171):7.2+5 (77-65)]: (7+93); g) [214: 84-3-(10-3²)] · [(2)²]³; h) 10+5 [50. 6²:2²-2 · 340 : 33⁹ · (2² +9+44+55)⁰].​

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