Question

Tính :

\(\frac{3}{7}+\frac{5}{7}-\frac{2}{7}+\frac{4}{7}\)                                 

Ai tích mk mk tích lại

Answer 1

3/7 + 5/7 = 8/7

2/7 +4/7 =6/7

8/7 -6/7 =2/7

Đ/S ; 2/7

Answer 2

8/7 -  6/7 = 2/7

Answer 3

  \(\frac{3}{5}+\frac{5}{7}-\frac{2}{7}+\frac{4}{7}\)

=\(\frac{8}{7}-\frac{2}{7}+\frac{4}{7}\)

=\(\frac{6}{7}+\frac{4}{7}\)

=\(\frac{10}{7}\)

Answer 4

\(\frac{3}{7}+\frac{5}{7}-\frac{2}{7}+\frac{4}{7}=\frac{3+5-2+4}{7}=\frac{10}{7}\)          nha bạn    khong ten

mình đầu nè!

Answer 5

Đặng Thị Ý Nhi sai rồi 

8/7 - 6/7  = 2/7

Answer 6

3/7 + 5/7 = 8/7

2/7 + 4/7 =6/7

8/7 - 6/7 = 2/7

d/s 2/7