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Popular Word Problems >

3 times a number minus 12 is equal to:5 times the number plus 15:Find the number.

Solution

3 t im es a n u mb er min u s 12 i s e q u a l t o : 5 t im es t h e n u mb er pl u s 15 : F in d t h e n u mb er .

Solution

The number : - 13 \frac{1}{2}

Solution steps

Represent the number with

x

A.T.Q.:

3 x - 12 = 5 x + 15

Solve for

x, 3 x - 12 = 5 x + 15 : x = - \frac{27}{2}

Convert improper fractions to mixed numbers:

\frac{27}{2} = 13 \frac{1}{2}

The number : - 13 \frac{1}{2}

Popular Examples

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