Answer:
b=9-l………………1
l=7m or l=2 m
Step-by-step explanation:
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Answer:
b=9-l………………1![b=9-l………………1 b=9-l………………1](https://tex.z-dn.net/?f=b%3D9-l%E2%80%A6%E2%80%A6%E2%80%A6%E2%80%A6%E2%80%A6%E2%80%A61)
l=7m or l=2 m![l=7m or l=2 m l=7m or l=2 m](https://tex.z-dn.net/?f=l%3D7m%20or%20l%3D2%20m)
Step-by-step explanation: