en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular Word Problems >

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

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.

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

You deposit 24.00 in an account earning 5% interest compounded monthly. How much will you have in the account in 155 years?Tariq went shopping for a new pair of pants. Sales tax where he lives is 4%. The price of the pair of pants is 30. Find the total price including tax.the quotient of a number and 6 decreased by 15 Mason and Ellen deposit 8,000.00 into a savings account which earns 9% interest compounded continuously. They want to use the money in the account to go on a trip in 1 year. How much will they be able to spend?What number is 65% of 120?