8 1/17 - (x+2 3/17) = 3 9/17+15/17
8 1/17-(х+2 3/17)=3 9/17+15/17
137/17-(х+37/17)=60/17+15/17
х+37/17=137/17-75/17
х=62/17-37/17
х=59/17=3 8/17