Question

Rezolva inecuatiile in R:
3(x-2)+x<4x+1
3(1-x)+2(2-2x)<0
5(x+2)-x>3(x-1)+x
-(4-x)<2(3+x)
4(x+8)-7(x-1)<12
va rog mult mult ajutatima
multumesc mult

Answer 1

a) =3x-6+x<4x+1
4x-6<4x+1
4x-4x<6+1
x∈Ф

b) 3-3x+4-4x<0
-7x<-4-3
-7x<-7     inmultim -1
7x>7
x>7/7
x>1
x∈(1,+∞)

c) 5x+10-x>3x-3+x
5x-x-3x-x>-3-10
x∈Ф

d)-4+x<6+2x
x-2x<6+4
-x<10      inmultim -1
x>-10
x∈(-10,+∞)

e) 4x+32-7x+7<12
-3x+39<12
-3x<12-39
-3x<-27       inmultim -1
3x>27
x>27/3
x>9
x∈(9,+∞)