Question

1 2/3:2,8=2 6/7: х срочно помогите!!!!!

Answer 1

1 2/3:2,8=2 6/7: х
1 2/3*х=2,8*2 6/7
5/3*х=14/5*20/7
5/3*х=2*4
5/3*х=8
х=8*3/5
х=24/5=4 4/5

Answer 2

12/3:2,8=26/7:x
4:28/10=26/7:x
4×10/28=26/7:x
10/7=26/7:x
x=26/7:10/7
x=26/7:7/10
x=13/5
x=2.6