(-1/2)¤+(3/2)²-(3/2)³=1/16+9/4-27/8=1/16+36/16-54/16=37/16-54/16=-17/16 (-5/6)³:(-5/6)²+1/4= -5/6+1/4= -10/12+3/12=-7/12 (-5/7)²*7/5+(-5/6)³*36/25=25/49*7.5+125/216*36/25= 5/7+5/6= 30/42+35/42=65/42 (-1/3):2/3-(-1/2)=-1/243*3/2+1/16= 1/162+1/16= aduci si tu la acelasi numitor si afli rezultatul