123456789*987654321-123456788*987654322等于= ?
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2021-02-03
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123456789×987654321-123456788×987654322
=(123456788+1)×987654321-123456788×(987654321+1)
=123456788×987654321+987654321-123456788×987654321-123456788
=987654321-123456788
=864,197,533
=(123456788+1)×987654321-123456788×(987654321+1)
=123456788×987654321+987654321-123456788×987654321-123456788
=987654321-123456788
=864,197,533
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