=IF(A3"",SUM(B$2:B2)-SUM(C$1:C1),"") 看不懂

每日教育網2021.06.25 16:50:511060

題目：

=IF(A3"",SUM(B$2:B2)-SUM(C$1:C1),"") 看不懂

解答：

如果A3不等於空值,返回B$2:B2的和減去C$1:C1的和,否則返回空值

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