Question

1 45/10*4 5/6-1 4/5* 3 5/6+3 2/5
решите пж
это все дроби
даю 15 б

Answer 1

1  4/10 * 4  5/6 - 1 4/5 * 3 5/6 + 3 2/5 = -3  4/15
1) 1 4/10 * 4 5/6 = 14/10 * 29/6 = 203/30
2) 1 4/5 * 3 5/6 = 9/5 * 23/6 = 69/10
3) 203/30 - 69/10 = 203/30 - 207/30 = -4/30 = -2/15
4) -2/15 + 3 2/5 = -2/15 + 17/5 = -2/15 + 51/15 = -49/15 = -3  4/15