7/15+x=12/15

To solve the equation \( \frac{7}{15} + x = \frac{12}{15} \), you can isolate \( x \) by subtracting \( \frac{7}{15} \) from both sides:

\[ x = \frac{12}{15} - \frac{7}{15} \]

Now perform the subtraction:

\[ x = \frac{12 - 7}{15} = \frac{5}{15} \]

This can be simplified:

\[ x = \frac{1}{3} \]

So, the solution is:

\[ x = \frac{1}{3} \]