it

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popolare Word Problems >

The sum of three numbers is 12 . The third is 6 more than 8 times the second. 7 times the first is 8 less tha 6 times the second. Find the numbers. Show your work here

Soluzione

T h e s u m o f t h ree n u mb ers i s 12 . T h e t hi r d i s 6 m ore t han 8 t im es t h e seco n d . 7 t im es t h e f i rs t i s 8 l ess t ha 6 t im es t h e seco n d . F in d t h e n u mb ers . S h o w yo u r w or k h ere

Soluzione

The numbers : - \frac{12}{23}, \frac{50}{69}, 11 \frac{55}{69}

Fasi della soluzione

Represent the numbers with

x, y, z

:

number 1 : x

number 2 : y

number 3 : z

A.T.Q.:

x + y + z = 12

z = 6 + 8 y

7 x = 6 y - 8

x + y + z = 12, z = 6 + 8 y, 7 x = 6 y - 8 : x = - \frac{12}{23}, y = \frac{50}{69}, z = \frac{814}{69}

Convertire frazioni improprie in numeri misti:

\frac{814}{69} = 11 \frac{55}{69}

The numbers : - \frac{12}{23}, \frac{50}{69}, 11 \frac{55}{69}

Esempi popolari

savings account is set up, so that the simple interest earned on the investment is moved into separate account at the end of each year. If an investment of $7000 accumulate $910 of interest in the account after 2 years, what was the annual simple interest rate on the savings account?The sum of two consecutive odd numbers is 48 . Find the two numbers.Three less than a number is twelve.the sum of two numbers is 9 and the sum of their squares is 41. find the two numbers The differenza between the squares of two consecutive integers is 29