3х + 4/5 + x - 7/2 = 2(2x + 3)/5 = 4x + 6/5

[tex] \frac{3x+4}{5}+ \frac{x-7}{2}= \frac{2(2x+3)}{5}= \frac{4x+6}{5} [/tex]
6х + 5х - 8х = 12 - 8 + 35
3х = 39
х = 13