1-)
5x+3>7x-1
5x-7x>-3-1
-2x>-4
X>-4/-2
X>2
2-)
•5*2x+5*3
10x+15
•3*7x+3*(-2)
21x-6+5
21x-1
10x+15<21x-1
10x-21x<-1-15
-11x<-16
x<-16/-11
x<1,45
3-)
•4x*3+4x*x+(-2)*3+(-2)*x
12x+4xau carre-6-2x
4xau carre+10x-6
•4xau carre-12x
4xau carre+10x-6>4xau caree-12x
.....
