Question

Twice a number subtracted from five times the number gives 12. Which is the number?​

Answer 1

Answer:

a) 5x - 2x = 12

b) 4

Step-by-step explanation:

Let the number be x.

According to the given problem, twice that number is being subtracted from five times that number.

The difference between these two are 12.

Two times of x is 2x. Five times of x is 5x.

Therefore when algebraic equation is formed it gives :

a) 5x - 2x = 12

This form of equation is known as linear equation where from the equation value of unknown quantity can be found.

b) Hence from the above formed equation, we can find out the number:

5x - 2x = 12

3x = 12

x = 12/3

x = 4

Therefore the number is 4.

Step-by-step explanation:

Answer 2

Given:

Twice a number subtracted from five times the number gives 12.

Find:

Which is the number?​

Solution:

Let the number be x.

According to the given problem, twice that number is being subtracted from five times that number.

The difference between these two are 12.

Two times of x is 2x. Five times of x is 5x.

Therefore when algebraic equation is formed it gives :

a) 5x - 2x = 12  

This form of equation is known as linear equation where from the equation value of unknown quantity can be found.  

b) Hence from the above formed equation, we can find out the number:  

$5x - 2x = 12$  

$3x = 12$  

$x = \frac{12}{3}$  

$x = 4$  

Hence, the number is 4.