Question

If we add 7 to twice a number,
we get 49. Find the number:​

Answer 1

Answer:

• The number is 21.

Step-by-step explanation:

Given that:

• If we add 7 to twice a number, we get 49.

To Find:

• The number.

Let us assume:

• The number be x.

Finding the number:

According to the question.

⟶ 2x + 7 = 49

⟶ 2x = 49 - 7

⟶ 2x = 42

⟶ x = 42/2

⟶ x = 21

Hence,

• The number is 21.

Answer 2

Given:-

• If we add 7 to twice a number, we get 49.

To Find:-

• The Number

Concept used:-

• Pair of Linear equation in one variable.

Solution:-

Let the number be a.

A.T.Q.

$⟹\:2a+7=49$

$⟹\:2a=49-7$

$⟹\:2a=42$

$⟹\:a=\dfrac{42}{2}$

${\boxed{\red{⟹\:a=21}}}$

Hence, The required number is 21.

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