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פּוֹפּוּלָרִי Word Problems >

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

פתרון

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 .

פתרון

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

צעדי פתרון

Represent the number with

x

A.T.Q.:

3 x - 12 = 5 x + 15

3 x - 12 = 5 x + 15, x

פתור בשביל:

x = - \frac{27}{2}

הסב שבר מדומה למספר מעורב:

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

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

דוגמאות פופולריות

what number is 24% of 38.5 0.8 is 0.5 percent of what number 2 less than the sum of 10 and a number Use the formula above to determine how long it will take an initial investment of 12,750 to grow to 36,975, if the account earns 11.5% interest per year, compounded quarterly. Round the solution to two decimal places.The diameter of a circle is 20 cm. Find its area in terms of pi