Which expression can be used to find the difference of the polynomials?

(4m - 5) - (6m - 7 + 2n)

A. (4m - 5) + (6m + 7 + 2n)

B. (4m - 5) + (-6m + 7 + 2n)

C. (4m - 5) + (-6m - 7 - 2n)

D. (4m - 5) + (-6m + 7 - 2n)

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720:90=72tens:9tens=

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