3m-2n+p-6m+3n+4p等于多少?

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3m-2n+p-6m+3n+4p等于多少?
3m-2n+p-6m+3n+4p等于多少?

3m-2n+p-6m+3n+4p等于多少?
哦~~我教你.3m-2n+p-6m+3n+4p=(3m-6m)+(-2n+3n)+(p+4p)= -3m+1n+5p