Odpowiedzi

2016-08-04T22:17:04+02:00
3-7x<6-10x
-7x+10x<6-3
3x<3/:3
x<1
x∈(-∞,1)

3(x+5)>15
3x+15>15
3x>0/:3
x>0
x∈(0,∞)
2016-08-04T22:45:19+02:00
1.
3 - 7x < 6 - 10x
-7x + 10x < 6 - 3
3x < 3     /:3
x < 1
x ∈ (-∞;1)


2.
3(x + 5) > 15     /:3
x + 5 > 5
x > 5 - 5
x > 0
x ∈ (0;+∞)