21/5×(22/7-22/3)×(-5/22)
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![21/5×(22/7-22/3)×(-5/22)](/uploads/image/z/133791-15-1.jpg?t=21%2F5%C3%97%2822%2F7-22%2F3%29%C3%97%28-5%2F22%29)
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21/5×(22/7-22/3)×(-5/22)
21/5×(22/7-22/3)×(-5/22)
21/5×(22/7-22/3)×(-5/22)
21/5×(22/7-22/3)×(-5/22)
=21/5×(-5/22)×(22/7-22/3)
=-21/22×(22/7-22/3)
=-21/22×22/7-22/3×(-21/22)
=-3-(-7)
=-3+7
=4
结果是4