Question

Решите неравенства 1)7х+4(х-2)>6(1+3х) 2)7(у+3)-2(у+2)》2(5у+1)
3)5(u +2)+14<6-u
4) 4(u+3)<3(u+2)​

Answer 1

Ответ:

1)7x+4x-8>6+18x

7x+4x-18x>6+8

-7x>14

x<-2

2)7y+21-2y-4>10y+2

7y-2y-10y>2-21+4

-15y>-15

y<1

3)5u+10+14<6-u

5u+u<6-14-10

6u<-18

u<-3

4)4u+12<3u+6

4u-3u<6-12

u<-6