Question

the least common denominator of 2 fractions is 12 if you add the two denominators their sum is 7 what are the denominators

Answer 1

possible options are 1 7, 2 5, 3 4
it would be 3 and 4 since they are the only two in here that have the least common denominate of 12. 5 isn't divisible by 12, 7 isn't either, so that only leaves 3 and 4 and they worked since 3*4 does equal 12.