fr

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Populaire Word Problems >

two times a number is 25. three times the first number minus the other number is 20. find the numbers

Solution

tw o t im es a n u mb er i s 25. t h ree t im es t h e f i rs t n u mb er min u s t h e o t h er n u mb er i s 20. f in d t h e n u mb ers

Solution

The numbers : 12 \frac{1}{2}, 17 \frac{1}{2}

étapes des solutions

Represent the numbers with

x and y

:

number 1 : x

number 2 : y

A.T.Q.:

2 x = 25

3 x - y = 20

2 x = 25, 3 x - y = 20 : x = \frac{25}{2}, y = \frac{35}{2}

Convertir des fractions impropres en nombres mixtes:

\frac{25}{2} = 12 \frac{1}{2}

Convertir des fractions impropres en nombres mixtes:

\frac{35}{2} = 17 \frac{1}{2}

The numbers : 12 \frac{1}{2}, 17 \frac{1}{2}

Exemples populaires

Sixteen is 64% of what number?find the volume of a sphere with a diamètre of 5cm Five times Luis's age is 30 years.What is Luis's age?a student is ranked 13th from the right and 8th from the left.how many students are there in total?One number is 10 greater than another. The product of the numbers is 39 . Find the numbers.