那(-217又7/9)-(-7)和-22/7x(7/22-4/3)x7/22÷(-22/21)呢?
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那(-217又7/9)-(-7)和-22/7x(7/22-4/3)x7/22÷(-22/21)呢?
![那(-217又7/9)-(-7)和-22/7x(7/22-4/3)x7/22÷(-22/21)呢?](/uploads/image/z/19531556-44-6.jpg?t=%E9%82%A3%28-217%E5%8F%887%2F9%29-%28-7%29%E5%92%8C-22%2F7x%EF%BC%887%2F22-4%2F3%EF%BC%89x7%2F22%C3%B7%EF%BC%88-22%2F21%EF%BC%89%E5%91%A2%3F)
(-217又7/9)-(-7)
= (-217又7/9)+7
= -210又7/9
-22/7x(7/22-4/3)x7/22÷(-22/21)
=-22/7 x 7/22 x(7/22-4/3)×(-21/22)
=-1x(7/22-4/3)×(-21/22)
=(7/22-4/3)× 21/22
=(21/66- 88/66) ×21/22
= - 67/22 ×21/22
= - 1407/484
= - 2又484分之439
= (-217又7/9)+7
= -210又7/9
-22/7x(7/22-4/3)x7/22÷(-22/21)
=-22/7 x 7/22 x(7/22-4/3)×(-21/22)
=-1x(7/22-4/3)×(-21/22)
=(7/22-4/3)× 21/22
=(21/66- 88/66) ×21/22
= - 67/22 ×21/22
= - 1407/484
= - 2又484分之439
(-217又7/9)-(-7)和-22/7x(7/22-4/3)x7/22÷(-22/21)
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