Сэтими уровнениями 6m+m-35=21 17n+14n-145=134 5n+9n+32=200

6m+m-35=21
7m=21+35
7m=56
m=56:7
m=8

17n+14n-145=134
31n=134+145
31n=279
n=279:31
n=9

5n+9n+32=200
14n=200-32
14n=168
n=168:14
n=12

7m-35=21
7m=21+35
7m=56
m=56/7
m=8

31n=134+145
31n=279
n=279/31
n=9

14n=200-32
14n=168
n=168/14
n=12