fr

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Populaire Word Problems >

The sum of three times a first number and twice a second number is 42 . If the second number is subtracted from twice the first number, the result is 14 . Find the first number.

Solution

T h e s u m o f t h ree t im es a f i rs t n u mb er an d tw i ce a seco n d n u mb er i s 42 . I f t h e seco n d n u mb er i s s u b t r a c t e d f ro m tw i ce t h e f i rs t n u mb er, t h e res u lt i s 14 . F in d t h e f i rs t n u mb er .

Solution

The number : 10

étapes des solutions

Represent the numbers with

x and y

:

number 1 : x

number 2 : y

A.T.Q.:

3 x + 2 y = 42

2 x - y = 14

3 x + 2 y = 42, 2 x - y = 14 : x = 10, y = 6

The number : 10

Exemples populaires

Find three consecutive even integers such that the sum of the smallest number and twice the middle number is 20 more than the largest number.The sum of twice a number and half the number is 10 A new television set was recently purchased for the common room in a Residence Hall for 432.60 including tax. If the tax rate is 3%, find the price of the television set before taxes.Question One number is eight less than three times another number. If the sum of the numbers is 20 , find the numbers.2times the sum of 1 and some number is 0