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21-02-2017
Mathematics

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3[-x+(2x+1)]=x-1 ? What is X?

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Аноним Аноним

21-02-2017

3[-x+(2x+1)]=x-1
3[x+1]=x-1
3x + 3 = x -1
3x - x = -1 -3
2x = -4
x = -4/2
x = -2

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