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פּוֹפּוּלָרִי Word Problems >

Twice the difference of a number and 3 is 9.

פתרון

Tw i ce t h e d i ff ere n ce o f a n u mb er an d 3 i s 9.

פתרון

The number : 7 \frac{1}{2}

צעדי פתרון

Represent the number with

x

A.T.Q.:

2 (x - 3) = 9

2 (x - 3) = 9, x

פתור בשביל:

x = \frac{15}{2}

הסב שבר מדומה למספר מעורב:

\frac{15}{2} = 7 \frac{1}{2}

The number : 7 \frac{1}{2}

דוגמאות פופולריות

Six less than the product of 3 and a number is equal to 5.9 plus 6 times a number is 9 times the number Mary, who is sixteen years old, is four times as old as her brother. How old will Mary be when she is twice as old as her brother?Martin has 3,582 in an account that earns 5% interest compounded annually.To the nearest cent, how much will he have in 1 year?Lamar earned some money doing odd jobs last summer and put it in a savings account that earns 11% interest compounded continuously. After 1 year, there is 100.00 in the account. How much did Lamar earn doing odd jobs?