Question

Îmi trebui urgent !! Dau coroana si 20 de puncte !!!

Answer 1

a)-1-[-3-(-22-13+42+27):
(25-43+35)]:5
=-1-[-3-(+34):(+17)]:5
=-1-[-3-2]:5
=-1-(-1)
=-1+1
=0
b)-1•[(-4)+(-2)•(-6)+(-6-4):2]-(2-5)
=-1•[-4+12-5]-(-3)
=-1(+3)+3
=-3+3
=0
c)-{-48:[(-25+7-18):(-11+8)]}+15:(-5)
=-{-48:[-36:(-3)]}-3
=-{-48:12}-3
=-(-4)-3
=4-3
=1
d)-{8•[(-573)-(-572)]-2•
(-3)}-(6-10)
=-{8•(-1)+6}+4
=-{-8+6}+4
=-(-2)+4
=2+4
=6
e){46-[26:2+(18-6•2):(4•2-5)]•3}•(15-10)
={46-[13+2]•3}•5
={46-45}•5
=1•5
=5
f){[4500:(-100)-90:2-
(-90)]:1996}•25
={-45-45-(-90)]:1996}•
25
={(-90+90):1996}•25
={0:1996}•25
=0•25
=0
g)(-1800+1250):10-220:
11-(1200:4-600:15 +25)
=(-550):10-20-(30-40
+25)
=-55-20-(-10+25)
=-75-(+15)
=-75-15
=-90