it

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popolare Word Problems >

If three more than four times a number is twenty-one less than seven times the same number. What is the number?

Soluzione

I f t h ree m ore t han f o u r t im es a n u mb er i s tw e n t y - o n e l ess t han se v e n t im es t h e s am e n u mb er . Wha t i s t h e n u mb er ?

Soluzione

The number : 8

Fasi della soluzione

Represent the number with

x

A.T.Q.:

3 + 4 x = 7 x - 21

Risolvi per

x, 3 + 4 x = 7 x - 21 : x = 8

The number : 8

Esempi popolari

Find two consecutive whole numbers that sqrt(70) lies between.If 300 is invested at a rate of 5% per year and is compounded quarterly, how much will the investment be worth in 20 years?the differenza of half of a number and 3 The area of a circle is 2.0096 square inches. What is the circle's diametro?What is the result when the number 40 is decreased by 25%?