2) (+43 – 27 +32) : (-23 +57-42) =
( 16+32):(34-42)=
48:(-8)= -6
3)-2·[+7.+47 – 19-26)-58] – 76 =
-2•[7•(28-26)-58]-76=
-2•(7•2-58)-76=
-2•(14-58)-76=
-2•(-44)-76=
88-76=12
4)-10-1-3 •[-316-3. (+231–344 + 115)-(-79+ 83 – 54) - 56]} =
-11-3•[-316-3•(-113+115)-(4-54)-56]=
-11-3•(-316-3•2+50-56)=
-11-3•(-316-6-6)=
-11-3×(-328)=
-11+984=973
5) + 550 • (-5•(+146–374 +135) : (+281- 374 +124) – 125) =
550•[-5•(-228+135):(-93+124)-125]=
550•[-5•(-93):31-125]=
550•(465:31-125)=
550•(15-125)=
550•(-110)= -60500
6) rescrie operatiile ca sa o pot rezolva
7) (+3)•(-3):(-3)-(-5)•(+5):(-5) =
-9:(-3)-(-25):(-5)=
3-5=-2
