If the area is 3x cm²,make an equation,and find x
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Answer:
8 cm.
Step-by-step explanation:
length of the rectangle (l) = x - 5 cm
breadth of the rectangle (b) = 8 cm
area of the rectangle (a) = 3x cm²
We know for a rectangle l * b = a
=> (x - 5) * 8 = 3x
=> 8x - 40 = 3x
=> 5x = 40
=> x = 8
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