4-(41/84-5/21)+7 11/30

Question

4-(41/84-5/21)+7 11/30

Answer 1

4-(41/84-5/21)+7 11/30=11 7\60
1)41\84-5\21=41\84-20\84=21\84=1\4
2)4-1\4=3 4\4-1\4=3 3\4
3)3 3\4+7 11\30=3 90\120+7 44\120=10 134\120=11 14\120=11 7\60

Comments

Спасибо большое!!!

Answer 2

1) 41/84-5/21=41/84-20/84=21/84

2) 4-21/84=3 84/84-21/84=3 63/84

3) 3 63/84+7 11/30=3 315/420+7 154/420=10 469/420=11 49/420=11 7/60

Ответ : 11 7/60