28-01-2018
Mathematics

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The sum of a number times 3 and 7 equals 2

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frenchiegirl frenchiegirl

28-01-2018

3 x + 7 = 2
3 x = 2 - 7
3 x = - 5
x = - 5/3

3 ( -5/3) + 7 = - 15/3 + 7 = - 5 + 7 = 2

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