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How do I solve The sum of a number and 3 is subtracted from 10 the result is 5

User EmpireJones
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1 Answer

12 votes
12 votes

State the given in the question

Given that the sum of a number and 3 is subtracted from, the result is 5

State what is to be found in the question

We are to find the number. In other to achieve this, we would follow the steps below:

Step 1: Represent the number with an unknown

Let x represent the number

Step 2: Interpret the given statement mathematically

If x is the number, then the sum of the number and 3 would be


x+3

Then the sum of a number and 3 subtracted from 10 would be


10-(x+3)

Finally, when the sum of a number and 3 subtracted from 10, the result is 5, would be


10-(x+3)=5

Step 3: Solve for x in the mathematical interpretation of the given statement

The value of x is as calculated as shown below:


\begin{gathered} 10-(x+3)=5 \\ \text{Open the bracket or the parenthesis} \\ 10-x-3=5 \\ \text{collect like terms} \\ 10-3-5=x \\ 7-5=x \\ 2=x \\ \text{Therefore:} \\ x=2 \end{gathered}

Hence, the number is 5

User Tdon
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