Question 57968
-8<3r-1<1

Solution:

Given - 8 < 3r-1 < 1

Add 1 to the above inequality, we get

- 8 +1 < 3r -1 + 1 < 1 + 1

- 7 < 3r < 2

Now divide the above equation by 3 we get,

(-7/3) < r < (2/3)

The solution is (-7/3) < r < (2/3)