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17-02-2016
Mathematics

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which statement makes the open sentence 3x+20=5x+6 true? x=13 x=2 x=4 x=7

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Аноним Аноним

17-02-2016

3x+20=5x+6
-3x -3x

20 = 2x + 6
-6 -6

2x = 14
2x/2 = 14/2
x = 7

Answer: x = 7

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