
2个回答
展开全部
倒过来用乘法分配律
即2乘以x+3乘以x
=(2+3)乘以x
=5乘以x
=5x
即2乘以x+3乘以x
=(2+3)乘以x
=5乘以x
=5x
2011-03-14
展开全部
倒过来用乘法分配律
即2乘以x+3乘以x
=(2+3)乘以x
=5乘以x
=5x
即2乘以x+3乘以x
=(2+3)乘以x
=5乘以x
=5x
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