Answer:
n = [tex]\frac{-1}{2}[/tex] - [tex]\frac{3}{2}[/tex]m or n = -0.5 - 1.5m
Step-by-step explanation:
21m + 14n = -7 (subtract 21m from each side)
14n = -7 - 21m (divide everything by 14)
n = [tex]\frac{-7}{14}[/tex] - [tex]\frac{21}{14}[/tex]m
n = [tex]\frac{-1}{2}[/tex] - [tex]\frac{3}{2}[/tex]m or n = -0.5 - 1.5m
