问题
解答题
计算:①-14×8-23÷(-4)×(-7+5) ②-22-(-1)2001×(
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答案
①-14×8-23÷(-4)×(-7+5)
=-1×8-8÷(-4)×(-2)
=-8-(-2)×(-2)
=-8-4
=(-8)+(-4)
=-12;
②-22-(-1)2001×(
-1 3
)÷1 2
+(-3)21 6
=-4-(-1)×(-
)÷1 6
+91 6
=-4-
÷1 6
+91 6
=-4-1+9
=(-5)+9
=4.