Question

Add.

Express your answer in simplest terms.
2/3+2/7

Answer 1

First step: Find a common denominator.

Answer 2

the LCD is 27

Answer 3

No it isn't. 7 doesn't go into 27. Just multiply the denominators for this one.

Answer 4

21

Answer 5

Yeah, now just get each fraction so that it has a denominator of 21

Answer 6

what do u mean

Answer 7

Well how many times does 3 go into 21?

Answer 8

7

Answer 9

So do \[\large \sf \frac{2}{3} \times \frac{7}{7}\] and that will get the denominator to 21

Answer 10

14/21

Answer 11

Good. Now do the same process for 2/7

Answer 12

\[2/7 \times 3/3\]

Answer 13

Yep, which would get you what?

Answer 14

6/21

Answer 15

Good. So now they have the same denominator. Now we can add them \[\large \sf \frac{14}{21}+\frac{6}{21}=?\]

Answer 16

20/21

Answer 17

Correct, and that would be your answer