Question

7 times the sum
of the number x and 5 is 12​

Answer 1

Given:

✰ 7 times the sum of the number and 5 is equal to 12.

To find:

✠ The number i.e, x

Solution:

Let's understand the concept first! First we will assume the number as x. We know that 7 times the sum of the number and 5 is equal to 12. So, we will do sum of x and 5 i.e, we will add x and 5 ( x + 5 ) and then 7 times the sum, which means that 7 will be multiplied by this sum, so we will multiply 7 by it 7( x + 5 ), so we know it is equal to 12. Thus, forming an equation and then doing requisite calculations we will find the value of x i.e, the required number.

Let's find out...✧

Let the number be x

According to question,

➤ 7( x + 5 ) = 12

➤ 7x + 35 = 12

➤ 7x = 12 - 35

➤ 7x = - 23

➤ x = - 23/7

∴ The required number = - 23/7

Verification:

L.H.S

➛ 7( - 23/7 + 5 )

➛ - 23 + 35

➛ 12

= R.H.S

Hence Proved!!

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Answer 2

★ Given :

7 times the sum of the number x and 5 is equal to 12.

★ To find :

The Number.

★Solution :

⚘Let the Number be x

➞ 7 (x + 5) = 12

➞ 7x + 35 = 12

➞ 7x = 12 - 35

➞ 7x = -23

➞ x = -23/7

The number is -23/7

Now let's Check our answer!

⚘Verification

➞ 7 (-23/7 + 5) = 12

➞ -23 + 35 = 12

➞ 12 = 12

L.H.S = R.HS

⚘Hence, Proved✔

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