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Make it simpler by saying that five-tenths is one-half ... so you can rewrite it as what is seven and one-half plus ten and one-half?

then you add 7 + 10 = 17 and one-half + one-half = one... .17+1=18

therefore 7 and 5/10 + 10 and 1/2 = 18

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14y ago

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Q: What is seven and five-tenths plus ten and one-half?
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