To get a close estimate, we can round 49 up to 50 and 311 down to 300, obtaining an estimate of 50/300 = 1/6, or 0.1666... as a repeating decimal. That decimal approximation is a little less than one hundredth away from the actual decimal approximation of ≈ 0.1576
You could use change of base formula
Answer:
first one is a and the second one is c
First make it that both denominators are the same.

Then add both numerators

Your final answer should be