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1. |3-x| = 4
3-x=4 lub 3-x = -4
-x = 4-3 lub -x= -4-3
-x = 1 lub -x = -7
x=-1 lub x= 7
2. |2-x|<3
-3<2-x<3
-3-2<-x<3-2
-5<-x<1
5>x> -1
x nalezy (-1;5)
3. |1-x|≥2
-2≥1-x≥2
-2-1≥-x≥2-1
-3≥-x≥1
3≤x≤-1
x nalezy (-∞;-1>u <3;+∞)
4. |1+x| = 2
1+x = 2 lub 1+x = -2
x= 1 lub x = -3
5. |3+x|≥1
-1≥ 3+ x ≥ 1
-1-3≥x≥1-3
-4≥x≥-2
x nalezy (-∞;-4>u <-2;+∞)
6. |3-x|≤2
-2≤3-x≤2
-2-3≤-x≤2-3
-5≤-x≤-1
5≥x≥1
x nalezy <1;5>