Question

the sum of two times a number and seven is twenty one​

Answer 1

 Question : the sum of two times a number and seven is twenty one​

Answer :

Let the number be x

5 times of x=5x

And 7 means add 7=5x+7

Their sum = 5x+7=22

Therefore 5x=22–7=15

5x=15 dividing by 5

x=3

Verification

5x+7=22

5*3+7=22

15+7=22

22=22

L.H.S.= R.H..S

Ans The number is 3

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Answer 2

Given :

• The sum of two times a number and seven is twenty one.

To Find :

• The Numbers

Solution :

Let,

• First Number = 2x
• Second Number = 7 [Given]

According to the Question :

⠀⟶⠀Sum of Numbers = 21

⠀⟶⠀2x + 7 = 21

⠀⟶⠀2x = 21 - 7

⠀⟶⠀2x = 14

⠀⟶⠀x = 14/2

⠀⟶⠀x = 7

Verification :

⠀⟶⠀Sum of Numbers = 21

⠀⟶⠀2x + 7 = 21

⠀⟶⠀2 × 7 + 7 = 21

⠀⟶⠀14 + 7 = 21

⠀⟶⠀21 = 21 ⠀⠀⠀⠀⠀[Hence Verified]

So the First Number is 14

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