Question

Tinand seama de ordinea efectuarii operatiilor si de ordinea suprimarii parantezelor,efectuati:
d)[7-(-6+2)+(8-9+9)-(-8+2)]· (-2)-4· (-6);
e)1-2·{-20·[15·(-7)-24·(-4)]} +2 * {-8*[-30-2*(-5)]};
f)5+2·(-3)-178·23·0·(-5)+2·(-7)·(-1)·(-135).

Stiu ca punctele a,b si c lipsesc,dar le-am rezolvat deja :P
Va rog,repede!

Answer 1

d)[7-(-6+2)+(8-9+9)-(-8+2)]•(-2)-4•(-6)=
(7+6-2+8+8-2)•(-2)+24
25•(-2)+24
-50+24
-26



e)1-2•{-20•[15•(-7)-24•(-4)]}+2•{-8•[-30-2•(-5)]}=
1-2•[-20•(-105+96)]+2•[-8•(-30+10)
1-2*(-20*9)+2*160
1-2*(-180)+320
1+360+320=681




f) 5+2*(-3)-178*23*0* (-5)+2*(-7)*(-1)*(-135)
5-6-0+14*(-135)
-1-1890=
-1891