Rozwiąż nierówności:
a)10+x≥7
b)5x-1,5<3,5
c)14+2x≤20
d)3x-2< -8
a) 10 + x ≥ 7
x ≥ 7-10
x ≥ -3
x∈<-3 , +∞)
b)5x -1,5 <3,5
5x < 3,5 +1,5
5x <5 /:5
x<1
x∈(-∞ , 1)
c)14+2x ≤ 20
2x ≤ 20-14
2x ≤ 6 /:2
x≤ 3
x∈(-∞ , 3>
3x <-8+2
3x < -6 /:3
x< -2
x∈(-∞ , -2)
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a) 10 + x ≥ 7
x ≥ 7-10
x ≥ -3
x∈<-3 , +∞)
b)5x -1,5 <3,5
5x < 3,5 +1,5
5x <5 /:5
x<1
x∈(-∞ , 1)
c)14+2x ≤ 20
2x ≤ 20-14
2x ≤ 6 /:2
x≤ 3
x∈(-∞ , 3>
d)3x-2< -8
3x <-8+2
3x < -6 /:3
x< -2
x∈(-∞ , -2)