Question

4 efectuati ;
a) -1-[-3-(-22-13+42+27):(25-43+35)]:5;
b)-1[·(-4)+(-2)·(-6)+(-6-4):2]-(2-5);
c)-{-48:[(-2+7-18:9-11+8)]}+15:(-5);

Answer 1

a) -1-[-3-(-22-13+42+27):(25-43+35)]:5=
=-1-[-3-(34):17]:5=
=-1-(-3-2):5=
=-1-(-5):5=
=-1+1=0

 b)  -1·[(-4)+(-2)·(-6)+(-6-4):2]-(2-5)=
= -1·[(-4)+12+(-10):2]+3=
= -1·[(-4)+12-5]+3=
=-1·3+3=
=-3+3=0

 c) -{-48:[(-2+7-18:9-11+8)]}+15:(-5) =
=-{-48:[(-2+7-2-11+8)]}-3 =
=-(-48:0)-3 =-3