Question

5+2m. M=-1.5
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2-4n. N=-3/4

Answer 1

$m=-1,5quad n=-frac{3}{4}$

$frac{5+2m}{2-4n}=frac{5+2(-1,5) }{2-4(-frac{3}{4})}= frac{5-3}{2+3} = frac{2}{5} =0,4$