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Chapter 3: Q. 16 (page 315)

In the following exercises, solve each number word problem.

The sum of a number and nine is 17. Find the number.

Short Answer

Expert verified

The number is 8.

Step by step solution

01

Step 1. Given Information  

We are given that the sum of a number and nine is 17.

We have to find the number.

02

Step 2. Forming the equation  

Let the number bex,

So, the equation will be,

x+9=17

03

Step 3. Solving the equation  

Subtracting 9from both sides, we get

x+9=17x=17-9x=8

Hence, the number is 8.

04

Step 4. Checking the solution  

Putting the value of xin the equation, we get

x+9=178+9=1717=17LHS=RHS

Hence the solution is correct.

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