When adding fractions with different denominators, you must find a common denominator
(you must have equal denominators). To do that you must multiply the denominators. 2. Re-write the equivilant fraction to its new denominator. 3. and add the numerators. Dont forget to add the whole numbers.
Eg. 5 3/8 + 4 7/16=
5+4=9 (add the whole numbers)
3/8 x2= 6/16 (multiply the denominator and numerator)
6/16+7/16=13/16(Add the fractions)
9+13/16=9 13/16
Answer:9 13/16
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