13/68 * 7/11 + 13/68 * 3/5 Решить двумя способами. Created by Alsu2704. matematika-ru

5 Решить двумя способами...

ku2z

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Первый: выносим общий множитель за скобки, получается 13/68(7/11+3,5) = 13/68(35/55+33/55) = 13/68*68/55 = 13/55
второй: 13*7/68*11+13*3/68*5 = 91/748+39/340 = 91/748+85,8/748 = 176,8/748 = 1768/7480 = 13/55

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Георгий2003

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91/748+39/340=455/3740+429/3740=884/3740= 13/55
13/68(7/11+3/5)=13/68(35/55+33/55)=13/68*68/55= 13/55

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