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23 December, 14:42

How to solve - 3x-9+15x

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  1. 23 December, 17:57
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    Simplify the variables, everything with the same variable gets combined. - 3x+15x you take the symbol in front of both the numbers, so it would be - 3+15 which is 12. then you put them together 12x-9, because the negative is in front of the 9. don't forget your variables
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