Question

Efectuati calculele a) -92-17+42+(-70+81-1) b)-6-[2+(-8)-1] c) 77-204+(245-475)-(41-242-156) d) 5- {2-[1-(-2)]}-6 e) -400-[-245+(185-6 100)]

Answer 1

a) -92-17+42+(-70+81-1)= -109+42+10=-109+52=-57

b)6-[2+(-8)-1]=6-(2-9)=6-(-7)=6+7=13

c)77-204+(245-475)-(41-242-156)=-127-230+357=-357+357=0

d)5- {2-[1-(-2)]}-6=5-(2-(1+2))-6=-1-(2-3)=-1-(-1)=-1+1=0

e)-400-[-245+(185-6 100)]=-400-(-6160)=-400+6160=5760