若-3x^2m-5y^5与0.7y^2nx^4是同类项,则m= n=
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若-3x^2m-5y^5与0.7y^2nx^4是同类项,则m=n=若-3x^2m-5y^5与0.7y^2nx^4是同类项,则m=n=若-3x^2m-5y^5与0.7y^2nx^4是同类项,则m=n=2
若-3x^2m-5y^5与0.7y^2nx^4是同类项,则m= n=
若-3x^2m-5y^5与0.7y^2nx^4是同类项,则m= n=
若-3x^2m-5y^5与0.7y^2nx^4是同类项,则m= n=
2m-5=4
2n=5
m=9/2
n=5/2
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