Question

负5除以负9分之7乘以5分之4乘以负2又4分之1除以7等于多少

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要过程哦

Answer 1

负5除以负9分之7乘以5分之4乘以负2又4分之1除以7
=-5/(-7/9)*4/5*(-9/4)/7

=-5*9/7*4/5*9/4*1/7
=-9*9/(7*7)
=-81/49

Answer 2

-5÷7/9×4/5×9/4÷7
=-5×9/7×4/5×9/4×1/7
=-81/49

Answer 3

把式子转化成乘法计算
原式=（-5）*(-9/7)*4/5*(-9/4)*1/7
=-81/49