Question

Вычислите :
А) 1 1/2 х 3 1/3-4 4/9:4;
Б) 3 2/7 х 1/3+ 3 2/7 х 1 2/3
( х умножить, / дробь .)

Answer 1

 3 2/7 х 1/3+ 3 2/7 х 1 2/3 = 3 2/7 *(1/3 + 1 2/3) = 23/7 * 13/3 = 299/21 = 14  5/21

1 1/2 х 3 1/3-4 4/9:4 = 3/2 * 10/3 - 4 4/9 * 1/4 = 110/6 - 40/36= 660/36 - 40/36 = 620/36 = 17 8/36 = 17 2/9