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56x74+85x44+11x56怎么巧算
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56x74+85x44+11x56
=56x74+11x56+85x44
=56x(75+11)+85x44
=56x85+85x44
=(56+44)x85
=100x85
=8500
=56x74+11x56+85x44
=56x(75+11)+85x44
=56x85+85x44
=(56+44)x85
=100x85
=8500
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