1.(1)+14 6 (2)-6 -13
2.解:(1)(-19)-(-7)=(-19)+(+7)=-(19-7)=-12.
(2)4-6=4+(-6)=-(6-4)=-2.
(3)(-2.5)-(+2.5)=-2.5+(-2.5)=-(2.5+2.5)=-5.
(4)0-(-5)=0+(+5)=5.
3.解:(1)12-17=12+(-17)=-(17-12)=-5.
(2)(-10)-4=(-10)+(-4)=-(10+4)=-14.
(3)32-(-18)=-32+(+18)=+(32+18)=50.
(4)0-12=0+(-12)=-12.
(5)-32-(-18)=-32+(+18)=-(32-18)=-14.
(6)9-(+11)=9+(-11)=-2.
(7)(-2/5)-(-3/5)=-2/5+(+3/5)=+(3/5-2/5)=1/5.
(8)(-1)-(+3/2)=(-1)+(-3/2)=-5/2 .
(9)(-1/3)-(-1/3)=(-1/3)+(+1/3)=0.
(10)3/5-(+2/5)=3/5+(-2/5)=1/5 .
4.解:(1)-7-(+1)=-7+(-1)=-(7+1)=-8,即巴黎与东京你过得时差为-8.
(2)8-(-8)=16,即东京时间是16:00.