Question

1) 2x+1/1,3 = 2,5/0,65

2) 2,7/9 = 1 1/5/3х+1

Answer 1

2х+11.3=2,5 .65
2х+11310=2510 65100
2х+1013=5013
2х=5013-1013
2х=4013
х=4013:2=4013*12
х=2013=1 713

2.7 9=1 15 3х+1
1 15 3х=2710 9-1
653х=310-1
65 3х=-710
2х3=-710
х=-710:23=-710*32
х=-2120=-1 120=-1.05