Question

Find The Sum


4 2
- + -
7 5

Answer 1

Do you know how to find common denominators? Tha's the only way to add or subtract fractions.

Answer 2

when adding fractions you want to get the same denominator (bottom number)

to do this you will see what the first number that 7 AND 5 go into
the easiest way is to do 7x5

this is 35

you want to get 35 on the bottom
to do this you multiply the first fraction by 5 but because you multiplied the top by 5 you multiply the bottom by 5
this gives
20/35

the second fraction to get to 35 on the bottom you multiply 5 by 7 so you multiply the top by 7
this gives 14/35