(-12)-(+8)-(+10)-(-8) (+55)-(-9.4)-(+32)-(+9.4) (-2010)-(2011)-(2010)-(2011)

问题描述:

(-12)-(+8)-(+10)-(-8) (+55)-(-9.4)-(+32)-(+9.4) (-2010)-(2011)-(2010)-(2011)

白菜娃娃卡 ,(-12)-(+8)-(+10)-(-8)=-12-8-10+8=-12-10=-22(+55)-(-9.4)-(+32)-(+9.4) =55+9.4-32-9.4=55-32=23(-2010)-(2011)-(2010)-(2011)=-2010-2011-2010-2011=-8042