(569+672*428)⼀(426*672+1913)怎么巧算

2025-12-18 01:53:03
推荐回答(1个)
回答1:

=【569+672×(426+2)】÷(672×426+1913)
=(569+672×426+672×2)÷(672×426+1913)
=(569+672×426+1344)÷(672×426+1913)
=(672×426+1913)÷(672×426+1913)
=1