[po'boy]

actually since we are working with recipricals add the 3 and 4 together and they become the top number of the fraction...then multiple the 3 and 4 together and they become the bottom number of the fraction....i think?

[Red_Devil 232]

Does not work with 2/3 + 1/7 ! You have to multiply the bottom number of one side with the top number and then the bottom number of the other side and then do the same with the bottom number of the other side. The number you get for the bottom after multiplication is now the common denominator 21. The two top numbers can then be added together = 17. 17/21 is the answer. All you are doing is multiplying each side by 1. (7/7*2/3)+(3/3*1/7)= 14/21+3/21 = 17/21

[secretagent]

actually since we are working with recipricals add the 3 and 4 together and they become the top number of the fraction...then multiple the 3 and 4 together and they become the bottom number of the fraction....i think?

Looks good, for reciprocals of whole numbers: 1/3 the recip of 3, 1/5 of 5, etc.