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X + 7 when x = -11 What is the answer

User Klepto
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1 Answer

5 votes

In order to solve this problem, we need to replace x with -11 in the expression


x+7

After that, we need to solve the addition operation.

So, replacing x with -11, we obtain:


-11+7

Then, we need to solve this addition. the first number is negative and the second is positive. We can think of this problem as follows:

We walked 11 steps backward and then walked 7 forwards. How many steps backward are we located from our original position?

Since we walked more steps backward than forward, we are some steps backward from our original position. So, the result will be a negative number. Now we need to find the difference between the numbers 11 and 7, which is


11-7=4

So, we ended 4 steps backward, which means our new position is -4.

We can also do that calculation as follows:


\begin{gathered} -11+7=-11-(-7) \\ \\ =-\mleft(11-7\mright)=-\mleft(4\mright)=-4 \end{gathered}

User Marcusnjones
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