3x+14/7+x+38/5=14

3x + x = 4x;   14/7 = 2; 38/5 = 7 + 3/5, so we have:

4x + 2 + 7 + 3/5 = 14

4x + 9 + 3/5 = 14

4x = 14 - 9 - 3/5

4x = 4 + 2/5

x = 1 + 1/10

$$x=1\frac{1}{10}$$

x = 11/10

x = 1.1

(Take your pick!)