299乘以25加199乘以75递等式计算
299乘以25加199乘以75递等式计算:
299x25+199x75
=299x25+199x3x25
=299x25+597x25
=(299+597)x25
=896x25
=224x4x25
=224x(4x25)
=224x100
=22400
299x25+199x75
=299x25+199x3x25
=299x25+597x25
=(299+597)x25
=896x25
=224x4x25
=224x(4x25)
=224x100
=22400
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