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22-11-2017
Mathematics

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3x-4y=65? What is the value of x? When y=4

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pbcup101 pbcup101

22-11-2017

16.3=x this is my guess

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Аноним Аноним

22-11-2017

1. Substitute 7 with 4
3x - 4(4) = 65
3x - 16 = 65

2. Solve
3x - 16 = 65
+16 +16
3x = 81
3 3
x = 27

3. Check (Optional)
3(27) - 4(4) = 65
81 - 16 = 65
65 = 65

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