Question

addition with unlike denominators

1/3+1/4=

Answer 1

make em the same...

Answer 2

the easiest way is to multiply the bottoms to get a common denominator. might not be the lowest one, but itll work in a pinch

Answer 3

(4)(3) = 12

1 (4) 1 (3) 4+3
---- + ---- = -----
3 (4) 4 (3) 12

Answer 4

what happens when we multipy nything by (1)? does it change in value?

Answer 5

the number 4/4 and 3/3 are both equal to (1) and so we can use that to our advantage to get a common denominator.

Does that make sense?

Answer 6

ok i got 12 at the bottom for both but i dont get how to get the two top numbers

Answer 7

it is a sly trik we use in math. it is to multiply by some form of "1". Tell me is 3/3 = 1? and is 4/4 = 1?

Answer 8

1 (4) 1 (3) 4+3
-- -- + -- -- = -----
3 (4) 4 (3) 12

Do you see it?

Answer 9

but the tow bottom number arent the same in the 2 one u did

Answer 10

7/12

Answer 11

amistre 64 the two bottom dumbers arent the same on the second one