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计算:(1)-23×(-2)3-(-1)4(2)-3-[-5+(1-0.7×2)]÷(-3)2.
计算:(1)-23×(-2)3-(-1)4(2)-3-[-5+(1-0.7×2)]÷(-3)2....
计算:(1)-23×(-2)3-(-1)4(2)-3-[-5+(1-0.7×2)]÷(-3)2.
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(1)原式=-8×(-8)-1
=64-1
=63;
(2)原式=-3-(-5+1-1.4)÷9
=-3-(-0.6)
=-2.4.
=64-1
=63;
(2)原式=-3-(-5+1-1.4)÷9
=-3-(-0.6)
=-2.4.
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