4 years ago

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

2 answers:

5 0

The number is 7(Seven).

Ber [7]4 years ago

4 0

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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