Question

даю 30балл!!!!!!....

Answer 1

1)вот ответ
3
-
8
2)
7
-
16

Answer 2

1). (53/12-61/18)*100/925+5/6= (159/36-122/36)*100/925+5/6=
37*100/36*925+5/6=37*4/36*37=1/9
2).(4/10+1/8+75/100)*2/3=80/200+25/200+150/200)*2/3=255*2/200*3=85/100=
17/20
3). 1/9*20/7=20/63