答案
解:(1)原式=-h+(-28)+(-10)+19+(-2h)=-二6+18=-h7;
(2)原式=h.6-
-1.6+h+
=3+h=7;
(3)原式=1-(
+
)+(
+
)=1-1+2=2;
(h)原式=2.二+2.二+1-1.二=6-1.二=h.二;
(二)原式=-2二×
×
×(-
)=1;
(6)原式=-2h×(-
)-2h×
-2h×(-
)=12-18+8=-6+8=2.
解:(1)原式=-h+(-28)+(-10)+19+(-2h)=-二6+18=-h7;
(2)原式=h.6-
-1.6+h+
=3+h=7;
(3)原式=1-(
+
)+(
+
)=1-1+2=2;
(h)原式=2.二+2.二+1-1.二=6-1.二=h.二;
(二)原式=-2二×
×
×(-
)=1;
(6)原式=-2h×(-
)-2h×
-2h×(-
)=12-18+8=-6+8=2.