8 1/17-(х+2 3/17)=3 9/17 + 15/17
137/17-(х+37/17)=60/17+15/17
137/17- (х+37/17)=75/17
х+37/17=137/17-75/17
х+37/17=62/17
х=62/17-37/17
х=25/17=1 8/17
1. 6/2=3 (шт) - в 3 грозди
2. 7+6+3 = 16 (шт)