aasirtahmid895 aasirtahmid895
  • 26-04-2020
  • Mathematics
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Three times a number, plus 6.4, is 13.9

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fadedfire07
fadedfire07 fadedfire07
  • 26-04-2020
The unknown number equals to 2.5

3x+6.4=13.9
Subtract 6.4 from both sides
3x=7.5
Divide 3 on both sides
X=2.5
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