48:8+32-54:6 , (35+65)-21-(16+8) , 8*6+35:5-19+2*5 , 18:3*4+27+40:8

1)48:8+32-54:6=2948:8=654:6=96+32=3838-9=292) (35+65)-21-(16+8)=5535+65=10016+8=24100-21=7979-24=553)8*6+35:5-19+2*5=468*6=4835:5=72*5=1048+7=5555-19=3636+10=464)18:3*4+27+40:8=5618:3=66*4=2440:8=524+27=5151+5=56