Question

ПОМОГИТЕ ПОЖАЛУЙСТА МАТЕМАТИКА 6КЛАСС СРОЧНО НАДО!!!!

Answer 1

1) 2 1/5 + 3 3/10 = 2 2\10 + 3 3/10 = 5 5\10 = 5 1/2

2) 3 9/10 + 1 4/5 = 3 9/10 + 1 8/10 = 4 17/10 = 5 7/10

3) 7 7/20 - 2 1/10 = 7 7/20 - 2 2/20 = 5 5/20 = 5 1/4

4) 6 1/10 - 1/5 = 6 1/10 - 2/10 = 61/10 - 2/10 = 59/10 = 5 9\10

4 5/6 - 2 7/8 = 3 11/6 - 2 7/8 = 1 11/6 - 7/8 = 1 44/24 - 21/44 = 1 23\24

(4/5-y)+1/6 = 1/3 - 1/10

1/3 - 1/10 = 10/30 - 3/30 = 7/30

(4/5-y)+1/6 = 7/30

4/5-y+1/6 = 7/30

-у = 7/30 - 4/5 - 1/6

-у = 7/30 - 20/30 - 5/30

-у = -18/30

у = 3/5