№162
Г)13(5-U)=26
65-13U=26
-13U=-39
U=3
Д)(1-J)19=57
19-19J=57
-19J=57-19
-19J=38
J=-2
Е)(5-2K)11=99
55-22K=99
-22K=99-55
-22K=44
K=-2
№163
А)B+11=2B-7
B-2B=-7-11
-B=-18
B=18
Б)F-23=17-3F
F+3F=17+23
4F=40
F=10
В)19-13H=1-4H
-13H+4H=1-19
-9H=-18
H=2
Г)0,8T-2=2,3T+2,5
0,8T-2,3T=2,5+2
-1,5T=4,5
T=-3