(-3)-(+10)-|-8|-(2) 4-[(-4)-12] (4-5)-(7-11)=(-3)-(+10)-8-(2) =4-[-(12+4)] =（-1)-(-4) =-(3+10)-(8+2) =4-(-16) =(-1)+4 =(-13)-10 =4+16 =3 =-(13+10) =20 =-23