Question

Efectuati:a)+5{-[-(-7+3)-(+2-5)+(-3+7)]} b)-3-[-2+(-3)-(-7]-[-15+(27-32)] c)10-{-[-25+(39-24-59)]-(-27)+(-32)} VA TOG E URGENT
DAU CORNITA

Answer 1

a)+5{-[-(-7+3)-(+2-5)+(-3+7)]}=
+5{-[-(-4)-(-3)+(4)]} =
+5[-(4+3+4)] =
+5(-11)=-55

b)-3-[-2+(-3)-(-7]-[-15+(27-32)]=
-3-[-2-3-(-7)]-[-15+(-5)]=
-3-(-2-3+7)-(-15-5)=
-3-(-5+7)-(-20)=
-3-(+2)+20=
-3-2+20=10-5=15

c)10-{-[-25+(39-24-59)]-(-27)+(-32)}=
10-{-[-25+(15-59)]+24-32}=
10-{-[-25+(-44)]-8}=
10-[-(-25-44)-8]=
10-[-(-69)-8]=
10-[-(-69)-8]=
10-(69-8)=
10-61=-51