## anonymous 4 years ago i am needing help 3/10 and 6/7 fractions with common denominators then the sum

1. Akshay_Budhkar

ok the basic concept in such questions is that u take the LCM of the two denominators

2. Akshay_Budhkar

so in this case we take the LCM of 7 and 10 , which is 70, so we multiply the numerator and denominator with the numbers so the we get equivalent fractions with denominators 70

3. Akshay_Budhkar

so for the first fraction we get${3 \over 10} = {3 \over 10} \times {7\over 7} = {21 \over 70}$

4. Akshay_Budhkar

for the next fraction we have${6 \over 7} = {6\over7} \times { 10 \over 10} = { 60 \over 70}$

5. Akshay_Budhkar

so now you can add them together${21 \over 70 } + {60 \over 70 } = { { 21+60} \over 70 } = {81 \over 70 }$

6. Akshay_Budhkar

is it clear?

7. anonymous

yes ma'am it is my daughter didnt believe me so i asked for help lol

8. Akshay_Budhkar

* sir :D hehe no problem it is always better to confirm :D

9. anonymous

sorry

10. Akshay_Budhkar

no problem, ppl generally think my name is that of a girl lol :D And welcome to openstudy :D

11. anonymous

thanks i will be using this more often with her