Question 987627
<pre>
The other tutor interpreted "the difference between 10 and 5" as 
simply 10-5. I'm quite sure that's not the way you were supposed 
to interpret it.  So I'm quite sure -8 is NOT the correct solution.
Here is the correct way to interpret it: 
</pre>
four times the sum of -2 and a number yields the difference between 10 and 5 times the number.
<pre>
Change "a number" and "the number to N:
</pre>
four times the sum of -2 and N yields the difference between 10 and 5 times N.
<pre>
Change "the sum of -2 and N" to (-2+N)
</pre>
four times (-2+N) yields the difference between 10 and 5 times N.
<pre>
Change "5 times N" to 5N
</pre>
four times (-2+N) yields the difference between 10 and 5N.
<pre>
Change "four times (-2+N)" to 4(-2+N)
</pre>
4(-2+N) yields the difference between 10 and 5N.
<pre>
Change "the difference between 10 and 5N" to 10-5N
</pre>
4(-2+N) yields 10-5N
<pre>
Change "yields" to an equal sign
</pre>
4(-2+N) = 10-5N
<pre>
Now you can finish by yourself.

Edwin</pre>