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11-02-2018
Mathematics

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Mary multiplied a number by -3. When she added the result to 6, she got 12. What is her number?

Mary multiplied a number by 3 When she added the result to 6 she got 12 What is her number class=

Respuesta :

11-02-2018

x×-3+6=12, -3×=12-6, -3x=6 |÷-3, x=-2

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