Question 1106664
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<U>1. The solution</U>


<pre>
Look into the two equations. Their left sides are IDENTICAL, right ?


Hence, their right sides are equal:

3x - 7 = -x + 9

3x + x = 9 + 7

4x = 16  ====>  x = {{{16/4}}} = 4.


Then from the first equation y = 3x-7 = 3*4 - 7 = 12-7 = 5.


<U>Answer</U>.  x= 4,  y= 5.
</pre>


<U>2.  Checking / (verifying)</U>


<pre>
Substitute the obtained values x= 5, y= 5 into the original equations.


a)  First equation becomes  5 = 3*4 - 7.   Is is true ?   - YES, it is.  Thus first equation is just checked.


b)  Second equation becomes  5 = -4 + 9.   Is it TRUE ?  -  YES, it is.  Thus second equation is just checked, too.

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</pre>

The check is completed.


The solution is completed.


You are done.