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4.9x6.4+14x0.36-6.4x3.5怎么简算?
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4.9x6.4+14x0.36-6.4x3.5 怎么简算?
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答案和解析
4.9x6.4+14x0.36-6.4x3.5
=6.4x(4.9-3.5)+1.4x3.6
=6.4x1.4+1.4x3.6
=1.4x(6.4+3.6)
=1.4x10
=14
=6.4x(4.9-3.5)+1.4x3.6
=6.4x1.4+1.4x3.6
=1.4x(6.4+3.6)
=1.4x10
=14
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