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)
3)5(u +2)+14<6-u
4) 4(u+3)<3(u+2)
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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