From an iron bar of length (20 – 7y) m, a piece of length (2y – 1) m was cut. Find the length of the remaining iron bar.
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Answer:
remaining length = original length - length of cut piece
=> 20. - 7y - [ 2y - 1 ]
=> 20 - 7y - 2y + 1
=> 21 - 9y m
therefore remaining length = 21 - 9y m
Step-by-step explanation:
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