Question

Five added to twice a number gives 13. Find the number,​

Answer 1

Answer:

5 added to twice a number give 13 => 2x+5 = 13

=>2x+5=13

=>2x = 13-5

=> 2x = 8

=> x = 8/2

=> x = 4

Answer 2

• The number is 4.

Given :

• Five added to twice a number gives 13.

To Find :

• The number.

Solution :

Let,

The number be x.

According to the question,

Five added to twice a number.

Twice a number,

I.e.,

2 × x = 2x

Five added to twice a number,

I.e.,

2x + 5

It gives 13.

I.e.,

2x + 5 = 13 –––––(1)

Now, solve it.

$\implies \rm2x + 5 = 13 \\ \\ \implies \rm2x = 13 - 5 \\ \\ \implies \rm2x = 8 \\ \\ \implies\rm x = \cancel\dfrac{8}{2} \\ \\ \implies\rm x = 4$

Hence,

The number is 4.

Verification :

Substitute the value of x in equation (1),

$\implies \rm2x + 5 = 13 \\ \\ \implies \rm 2(4) + 5 = 13 \\ \\ \implies \rm 2 \times 4 + 5 = 13 \\ \\ \implies \rm 8 + 5 = 13 \\ \\ \implies \rm 13 = 13$

Hence Verified !