Question

1/1,3х+0,2=1
3/25у - 1,2=0,6

Answer 1

10/13 х + 1/5  = 1
10/13 х =1- 1/5
10/13 х = 5/5 - 1/5
10/13 х = 4/5
х = 4/5 : 10/13
х =26/25
х = 1 1/25

3/25у = 0,6 +1.2
3/25у =1,8
у = 1,8 : 3/25
у = 18/10 : 3/25
у = 15