Sagot :
1. 7x +3 > 2x - 5
=7x-2x+3+5>0
=5x+8>0
=5x>-8
=x>-8/5
=-1.6
3. 7(x+1) > 5 - 2x
=7(x+1)-5+2x>0
=(7*x+7*1)-5+2x>0
=7x+7-5+2x>0
=9x+2>0
=9x>-2
=x>-2/9
4. -5x +3 > 2(x - 5)
=2(x-5)+5x-3>0
=(2*x+2*(-5))+5x-3>0
=2x-10+5x-3>0
=7x-13>0
=7x>13
=x>13/7
2. 5x - 3< 8x - 6
=5x-8x+6-3<0
=-3x+3<0
=-3x<-3
=x<-3/-3
=1