计算:(1)(712-56+34)×(-12)÷(-6)(2)-14-[1-(1-0.5×13)]×[2-(-3)2](3)-22-(-3)3×(-1)4-(-1)5(4)(-523)×(-34)-523×17-523×(-6).-数学
题文
计算: (1)(
(2)-14-[1-(1-0.5×
(3)-22-(-3)3×(-1)4-(-1)5 (4)(-
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答案
(1)(
=(
=(
=2×
=
=1; (2)-14-[1-(1-0.5×
=-1-(1-1+0.5×
=-1-
=-1+
=
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