hopemiller hopemiller

17-09-2018
Mathematics

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can you help me find x? x/7+x/3=9/7

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Аноним Аноним

17-09-2018

x/7 - x/3 = 9/7

x/7(3) - x/3(7) = 9/7(3)

3x/21 - 7x/21 = 27/21

3x - 7x = 27

-4x = 27

(1/-4) -4x = 27(1/-4)

x = -27/4

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