Question

Решите)Пожалуйста!Срочнооо!!)))
1)9целых 8\11+0,26х=3\50х-3\11+1.2х
2)6х+7,2-(-2,3)=2,5-х
3)10целых3\8+1\40=0,075х+20,625

Answer 1

1)9  8\11+0,26х=3\50х-3\11+1.2х
9  8\11+0,26х=0,06х-3\11+1.2х
9  8\11+0,26х=1,26х-3\11
1,26х-0,26х=9 8/11+3/11
х=9 11/11
х=10

2)6х+7,2-(-2,3)=2,5-х
6х+7,2+2,3=2,5-х
6х+9,5=2,5-х
6х+х=2,5-9,5
7х=-7
х=-7/7
х=-1

3)10 3\8+1\40=0,075х+20,625
10,375+0,025=0,075х+20,625
10,4=0,075х+20,625
0,075х=10,4-20,625
0,075х=-10,225
х=-10,225/0,075=-10225/75=409/3=136 1/3