11x+9y-x+y怎么化简?
问题描述:
11x+9y-x+y怎么化简?
答
11x-x+9y=y
答
11x+9y-x+y
=10x+10y
=10(x+y)
答
11x+9y-x+y
=11x-x+9y+y
=10x+10y
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