Question

When 2 is added to 9 more than a certain number, the result is 25. Find the number.

Answer 1

Equations

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Let's solve the problem given to us today! The problem is the following:

`\mapsto\quad\textbf{When 2 is added to 9 more than a number, the result is 25.}`

We need to write this as an equation and solve.

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First, pick a letter to represent the unknown number. Then, set up the equation, and solve.

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I'll choose d for my number.

We're adding 2 to 9 more than d. 9 more than a number means we add 9 to that number: d + 9

Then, we also add 2 to it: d + 9 + 2

The result is 25. We get the following equation:

d + 9 + 2 = 25

Combine like terms :

d + 11 = 25

Subtract 11 from both sides.

d = 14

Therefore, the unknown number is 14.

Answer 2

Answer: The number is 14

Explanation:

Let the certain number be equal to x. First, we will write a mathematical equation.

(x + 9) + 2 = 25

Next, we will solve this equation for x.

Given:

(x + 9) + 2 = 25

Subtract 2 from both sides:

(x + 9) = 23

Subtract 9 from both sides:

x = 14