sofiabarahona sofiabarahona

20-12-2017
Mathematics

contestada

the difference of 3 times a number and 18 is 39. what is the number?

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aidenh101 aidenh101

20-12-2017

The number is 7(Seven).

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StellarStephanie StellarStephanie

20-12-2017

Just set up an equation, with "x" being the unknown number.
3x-18=39
3x=57
x=19.
The unknown number is 19.

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