1/3y+1/4y

To combine the fractions \( \frac{1}{3}y \) and \( \frac{1}{4}y \), you need a common denominator. The least common multiple of 3 and 4 is 12.

Now, convert each fraction:

\[ \frac{1}{3}y = \frac{4}{12}y \]

\[ \frac{1}{4}y = \frac{3}{12}y \]

Now, you can add them:

\[ \frac{4}{12}y + \frac{3}{12}y = \frac{4 + 3}{12}y = \frac{7}{12}y \]

So,

\[ \frac{1}{3}y + \frac{1}{4}y = \frac{7}{12}y \]