问题
解答题
计算: (1)-12011-(0.5-1)×
(2)(-47.65)×2
|
答案
(1)原式=-1-(-
)×1 2
×(-7)=-1-1 3
=-27 6
;1 6
(2)原式=2
×(-47.65+37.15)+10.5×(-76 11
)5 11
=-10.5×2
+10.5×(-76 11
)5 11
=-10.5×(2
+76 11
)5 11
=-10.5×10=-105.