1.11s:7=11
11s=11*7
11s=77
s=77:11
s=7
2.230n+10n+800=170000
240n=170000-800
n=169200:240
n=705
3.(2h+8h)*17=1700
10h=1700:17
10h=100
h=10
4.(16f-12f+f):25=5
5f=5/25
5f=1/5
f=1/5:5
f=1/25
5.6m+4m+15=375
10m=360
m=36
ВСЕ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
УДАЧИ=)