(-2,4-6,1)*1 3/17+(1 45/46-2 7/23): 1 7/23=

(-2,4-6,1)*1 3/17+(1 45/46-2 7/23):1 7/23= -10 1/4
-2,4-6,1= -8,5
-8,5*1 3/17= -85/10*20/17= -10
1 45/46-2 7/23= 91/46-53/23= 91/46-106/46= -15/46
-15/46:1 7/23= -15/46:30/23= -15/46*23/30= -1/4
-10+(-1/4)= -10-1/4= -10 1/4