А)3/10×2 2/9 б)5 1/7×2 в)1 1/9×1 4/5 г)8/7: 2 2/7 - вопрос №90311953102295172119145872279356223179 от osadchevasasha 29.05.2020 04:05

Question

Математика: А)3/10×2 2/9 б)5 1/7×2 в)1 1/9×1 4/5 г)8/7: 2 2/7 д)9 3/5÷6 е)2 2/3÷1 7/9 !

osadchevasasha · Answer

А)3/10 * 2 2/9 = 3/10 * 20/9 = 2/3,Б)5 1/7 * 2 = 36/7 * 2 = 72/7 = 10 2/7,В)1 1/9 * 1 4/5 = 10/9 * 9/5 = 10/5 = 2,Г)8/7 : 2 2/7 = 8/7 : 16/7 = 8/7 * 7/16 = 8/16 = 1/2,Д)9 3/5 : 6 = 48/5 * 1/6 = 8/5 = 1 3/5,Е)2 2/3 : 1 7/9 = 8/3 : 16/9 = 8/3 * 9/16 = 3/2 = 1 1/2...