Question

a) [(-17)-0]-[(+2)-(+0)]-{(-2)-[(+14)-0]}
b) -46-{-69+[-57+(+75)+(-12)]+(-13)}+(+57)

Answer 1

a) [(-17)-0]-[(+2)-(+0)]-{(-2)-[(+14)-0]}=
= -17-(+2)-[(-2)-(+14)]=
= -17-2-(-2-14)=
= -19-(-16)=
= -19+16=-3

b) -46-{-69+[-57+(+75)+(-12)]+(-13)}+(+57)=
=-46-[-69+(-57+75-12)-13]+57=
=11-[-69+(-69+75)-13]=
=11-(-69+6-13)=
=11-(-76)=
=11+76=87