Question

Calculati: a) -5+(-3):[2-(-9):(-3)]+7
b) 8-2*{5-3*[4-(-3):(-1)]}
c) -2*[3-36:(-9)]-2*[5-(-7)]
d) 36+2:[7-(-5):(-1)]

Answer 1

a) -5+(-3):[2-(-9):(-3)]+7 =
= -5+(-3):(2-3)+7 =
= -5+(-3):(-1)+7 =
= -5+3+7 =
 =5


b)b) 8-2*{5-3*[4-(-3):(-1)]}=
= 8-2*{5-3*[4-3]}=
= 8-2*(5-3*1)=
= 8-2*2=
= 4


c) -2*[3-36:(-9)]-2*[5-(-7)]=
=-2*(3+4)-2*(5+7)=
=-2*7-2*12=
=-14-24=
=38

d) 36+2:[7-(-5):(-1)]=
=36+2:(7-5)=
=36+1=
=37