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Answer:
15m
Step-by-step explanation:
Let the breadth be x, then the length is x + 7.
Perimeter of a rectangle = 2(L + B)
Perimeter of a rectangle = 2(x + 7 + x)
74 = 2(2x + 7)
74 = 4x + 14
4x = 74 - 14
4x = 60 Divide both sides by 4
x = 60 / 4
x = 15
Therefore, its breadth is 15m.