Question

I Will Medal And Fan Best Answer! I need explanation AND answer!


Add.

3/4 + 3/10
Write your answer as a fraction in simplest form.

Answer 1

21

Answer 2

21?

Answer 3

just kidding im just messing around

Answer 4

-_-

Answer 5

you must find the common denominator between 10 and 4

Answer 6

i know what to do, just not good at knowing how

Answer 7

ok, the common denominator is 20, because 10 can go into 20, and 4 can go into 20

Answer 8

but you cant just leave it as 3/20.

for 3/4 you multiplied 5*4 to get 20. so now you must multiply 3*5 also

Answer 9

what you do to the denominator you must ALWAYS do to the numerator

Answer 10

so now you have 15/20, correct? because 3/5 = 15 and 4/5 = 20

Answer 11

i don't get that last part

Answer 12

now you must do the same to 3/10, except this time you multiplied it by two because 10*2 = 20. so now, instead of multiplying 3*5, you are going to multiply 3*2

Answer 13

ok, so you need help more on the last part?

ok, so when you go to find the common denominator, you have to multiply the same number you multiplied on the bottom, to the top.

Answer 14

so, for example, if i wanted the common denominator to be 10, and we had the fraction 2/5, you would multiply 5*2 to get 10 right?

Answer 15

well, you must also multiply 2 to the numerator (2*2) because you did that to the denominator

Answer 16

get it?

Answer 17

so basically, whatever you do to the bottom you must also do to the top.

Answer 18

ok, so now do what we did with 3/4 (and remember we got 15/20) now do it with 3/10

Answer 19

i don't get most of that........

Answer 20

Sorry, i'm stupid

Answer 21

your not stupid, this certain part just may not be your strong suit, for instance my weak part in math is angle proofs and parabolas and postulates. you'll get it tho.

tell me where you exactly start to drop. where exactly do you not understand?

Answer 22

I don't understand MOST math. This is when i lost: so now you have 15/20, correct? because 3/5 = 15 and 4/5 = 20

Answer 23

you arent dividing. its not 3/5, its 3 * 5. ok, what doesnt make sense to you during that part? why i multiplied the number outcome?

Like, do you know why i multiplied 3 * 5 and 4 * 5?

Answer 24

no

Answer 25

ok, we need to get the common denominator because you cannot currently add

3/4 + 3/10 because the denominators are different

Answer 26

20 is the least common denominator we can use.

Answer 27

do you know why i picked 20?

Answer 28

no

Answer 29

ok, i picked 20 because both 4 and 10 can go into 20, right?

Answer 30

yes

Answer 31

ok, how do we multiply 4 to 20

Answer 32

what number multiplies with 4 to get 20?

Answer 33

5