6m+m-35=21 17n+14n -145=134 5n +9n +32=200 (x+57)/7=12 (161-y)/16=9 112/(17+x)=4 Решите...

Question

6m+m-35=21
17n+14n -145=134
5n +9n +32=200
(x+57)/7=12
(161-y)/16=9
112/(17+x)=4
Решите уравнение.

Answer 1

1)6m+m=35+21. 7m=56. m=56:7. m=8. 2)17n+14n=145+134. 31n=279. n=279:31. /n=9. 3)5n+9n=200-32. 14n=168. n=168:14. n=12.