Question

Find the greatest rational number among these -3/5,-3/11,-3/7

Answer 1

Answer:

first we have to find the lcm of the denominators which is 385

-3 * 77 / 5 * 77 , -3 * 35 / 11 * 35 , -3 * 55 / 7 * 55

-231 / 385 , - 105 / 385 , -165 / 385

in these -231 / 385 is greatest

therefore -3 / 5 is a greatest rational number among these

hope it helps

Answer 2

Answer:-3/5 is greater than -3/7 and

-3/11

Step-by-step explanation:

•Comparing -3/5 and -3/11. (by cross multiplication)

-3/5=-3/11

-3×11=5×-3

-33>-15

Therefore-3/5>-3/11

•Comparing -3/5 and -3/7(by cross multiplication)

-3/5=-3/7

-3×7=5×-3

-35>-15

Therefore -3/5>-3/7

Hence proved that -3/5 is greater rational no. than -3/11 and -3/11.

Hope this helps..