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List values in order $$\mathrm{A}$$$$\mathrm{B}$$$$\mathrm{C}$$. Use commas between values and do not use spaces. Find values for $$\mathrm{A}$$$$\mathrm{B}$$, and $$\mathrm{C}$$ so that $$(5n+\mathrm{A})(\mathrm{B}n+2)$$ is equal to $$15n^2+\mathrm{C}n-2$$.
$$\mathrm{A}=-1$$$$\mathrm{B}=3$$$$\mathrm{C}=7$$