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Answer:

Step-by-step explanation:

add
to both sides

add
to both sides

divide both sides by 


Suppose the length is 7x, the width is then 3x
7x*3x=525
21x²=525
x²=25
x=5
so the length is 7*5=35, and the width is 3*5=15
Answer:
They both have the same range
Step-by-step explanation:
375-175=200
400-200=200