Question

Rezolvati urmatoarele inecuatii in N: 
a)4-2(2+x)≥x 
b)3-5(2-x)≤x+1 
c)5x+6<2-3(x+3) 
d)4 - x/2 ≤ x

Answer 1

4-4-2x≥x
-2x≥x|-2
x≤x/2
3-10+5x≤x+1
4x≤8|4
x≥2
5x+6<2-3x-9
8x<-12|4
2x<-3|:2
x>-3/2
4-x/2≤x
-2x≤-2|:2
x≤1