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03-02-2021
Mathematics

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seven less than a third of the sum of a number and two

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Аноним Аноним

03-02-2021

The number is 15.

2x/3-7=3

3(2x/3–7)=3×3

2x-21+21=9+21

2x/2=30/2

x=15

Proof

15×2=30

30/3=10

10–7=3

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