Expression 3: floor left parenthesis, "x" , right parenthesis negative floor left parenthesis, StartFraction, left parenthesis, "x" minus 1 , right parenthesis Over 2 , EndFraction , right parenthesis minus floor left parenthesis, StartFraction, left parenthesis, "x" minus 1 , right parenthesis Over 3 , EndFraction , right parenthesis negative floor left parenthesis, StartFraction, left parenthesis, "x" minus 2 , right parenthesis Over 3 , EndFraction , right parenthesis plus floor left parenthesis, StartFraction, left parenthesis, "x" minus 1 , right parenthesis Over 6 , EndFraction , right parenthesis positive floor left parenthesis, StartFraction, left parenthesis, "x" minus 5 , right parenthesis Over 6 , EndFraction , right parenthesis negative left parenthesis, floor left parenthesis, StartFraction, left parenthesis, "x" minus 1 , right parenthesis Over 5 , EndFraction , right parenthesis positive floor left parenthesis, StartFraction, left parenthesis, "x" minus 4 , right parenthesis Over 5 , EndFraction , right parenthesis negative floor left parenthesis, StartFraction, left parenthesis, "x" minus 9 , right parenthesis Over 10 , EndFraction , right parenthesis minus floor left parenthesis, StartFraction, left parenthesis, "x" minus 1 , right parenthesis Over 10 , EndFraction , right parenthesis minus floor left parenthesis, StartFraction, left parenthesis, "x" minus 1 , right parenthesis Over 15 , EndFraction , right parenthesis negative floor left parenthesis, StartFraction, left parenthesis, "x" minus 4 , right parenthesis Over 15 , EndFraction , right parenthesis negative floor left parenthesis, StartFraction, left parenthesis, "x" minus 11 , right parenthesis Over 15 , EndFraction , right parenthesis negative floor left parenthesis, StartFraction, left parenthesis, "x" minus 14 , right parenthesis Over 15 , EndFraction , right parenthesis positive floor left parenthesis, StartFraction, left parenthesis, "x" minus 1 , right parenthesis Over 30 , EndFraction , right parenthesis positive floor left parenthesis, StartFraction, left parenthesis, "x" minus 11 , right parenthesis Over 30 , EndFraction , right parenthesis positive floor left parenthesis, StartFraction, left parenthesis, "x" minus 19 , right parenthesis Over 30 , EndFraction , right parenthesis positive floor left parenthesis, StartFraction, left parenthesis, "x" minus 29 , right parenthesis Over 30 , EndFraction , right parenthesis , right parenthesisfloorx−floorx−12−floorx−13−floorx−23+floorx−16+floorx−56−floorx−15+floorx−45−floorx−910−floorx−110−floorx−115−floorx−415−floorx−1115−floorx−1415+floorx−130+floorx−1130+floorx−1930+floorx−2930