1,5х+31/3=2,5
1,5х=-1 1/6
х=-1 1/6 :1 3/6
х=- 7/6 *6/9
х=-7/9
2,5х+ 6,3 = 7 1/3
2,5х=220/30-189/30
2,5х=31/30
х=31/30*10/25
х=31/175
1,5х+31/3=2,5
1,5х=-1 1/6
х=-1 1/6 :1 3/6
х=- 7/6 *6/9
х=-7/9
2,5х+ 6,3 = 7 1/3
2,5х=220/30-189/30
2,5х=31/30
х=31/30*10/25
х=31/175