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0

05 07

04 09

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00 10

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I have introduced leading zeros just for alignment (editor limitation). You cannot subtract 9 inches from 7 inches, so you borrow 1 foot from the 5 feet, so now you will have (12 + 7) 19 inches from which you can subtract 9 to get 10 inches. Since you borrowed 1 foot from 5 feet, it has only 4 feet left and if you subtract 4 from 4 you get zero. So the answer is 0 feet and 10 inches or simply 10 inches

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13y ago

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