Respuesta :

Answer:

Step-by-step explanation:

make the denominator of each fraction same (L.C.M of denominators),here 12.

[tex]\frac{1}{3} \times \frac{4}{4 } =\frac{4}{12} \\ \frac{1}{4} \times \frac{3}{3} =\frac{3}{12}\\ \frac{1}{3} +\frac{1}{4} =\frac{4}{12} +\frac{3}{12} = \frac{7}{12}[/tex]

Arenaita
1/3+1/4=7/12 and not 2/7 because, when you go to transform the fractions with the least common denominator, you will use 12. 1/3 equals 4/12 and 1/4 equals 3/13.
Therefore, you must use the least common denominator and you should NOT ADD THE DENOMINATORS if you add the denominators, you will just get a complete different answer.