Question

Dau Corona
Repede!!!​

Answer 1

Răspuns:

a)x<-5

b) x<-4

c) x≤15

d) x>-18

e) x<23

f) x<10

g) x≤16

h) x≤-6

Explicație pas cu pas:

a) 4·(x+3)<3·x+7 => 4·x+4·3<3·x+7 => 4·x+12<3·x+7 => 4·x-3·x<7-12 => x<-5

b) 8·(x+2)<5·x+4 => 8·x+8·2<5·x+4 => 8·x+16<5·x+4 => 8·x-5·x<4-16 => 3·x<-12 => x<-4

c) 6·(x-3)-10≤2·(2·x+1) => 6·x-6·3-10≤2·2·x+2·1 => 6·x-18-10≤4·x+2 => 6·x-28≤4·x+2 => 6·x-4·x≤2+28 => 2·x≤30 => x≤15

d) 5·(2·x-3)-3·(x+1)>4·(x-9) => 5·2·x-5·3-3·x-3·1>4·x-4·9 => 10·x-15-3·x-3>4·x-36 => 7·x-18>4·x-36 => 7·x-4·x>-36+18 => 3·x>-54 => x>-18

e) 3·(x-1)-6<2·(x+7) => 3·x-3-6<2·x+2·7 => 3·x-9<2·x+14 => 3·x-2·x<14+9 => x<23

f) 5·(x-1)-3<3·(x+4) => 5·x-5·1-3<3·x+3·4 => 5·x-8<3·x+12 => 5·x-3·x<12+8 => 2·x<20 => x<10

g) 6·(x-2)+x≤5·(x+4) => 6·x-6·2+x≤5·x+5·4 => => 7·x-12≤5·x+20 => 7·x-5·x≤20+12 => 2·x≤32 => x≤16

h) 4·(x+3)-9≤3·(x-1) => 4·x+4·3-9≤3·x-3·1 => 4·x+12-9≤3·x-3 => 4·x+3≤3·x-3 => 4·x-3·x≤-3-3 => x≤-6