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Antoine Martin
Mathematics
26 July, 21:51
How do i solve 7x-y=21
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Phillip Holloway
26 July, 22:06
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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
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Evie Kelley
26 July, 22:19
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It is 3 because we multiply 3 and 7 and we get 21
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