Вичислите,применив распределительное свойство:
А)6×5 5/6
Б) 9 3/5 ×8 3/7- 7 3/7×9 3/5
В)20×(6 3/5+2 7/20)
А)6×5 5/6
Б) 9 3/5 ×8 3/7- 7 3/7×9 3/5
В)20×(6 3/5+2 7/20)
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= 6 * (5 + 5/6) = 30 + 5 = 35---------------------------------------------
= 9 3/5( 8 3/7 - 7 3/7)) = 9 3/5 * 1 = 9 3/5
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= 20 * 6 3/5 + 20 * 2 7/20 = 20*33/5 + 20*47/20= 132+ 47 = 179