Х + 1/5 = 3/7 + 4/7

First, add the fractions on the right side:

3/7 + 4/7 = 7/7 = 1

So the equation becomes:

X + 1/5 = 1

Now, subtract 1/5 from both sides to solve for X:

X = 1 - 1/5
X = 5/5 - 1/5
X = 4/5

Therefore, the solution is X = 4/5.