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How do i solve 7x-y=21
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How do i solve 7x-y=21

User Jerry Nixon
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The answer answer is actually -3 because you divided 7 from 21 and you get 3 then you divided -1 because the y has a negative sing on it and you want it to be positive. That is why the answer is -3
User Lauri
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it is 3 because we multiply 3 and 7 and we get 21
User Thitemple
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