Question 1130668
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            Instead of that nonsensical response from the tutor @MathLover1, i will try to produce something more adequate.



<pre>
2x + 3y =  78      (1)
6x + 5y = 180      (2)


Apply the elimination method.  Multiply eq(1) by 3 (both sides).  Keep the equation (2) as is.


6x + 9y = 234      (1')
6x + 5y = 180      (2')


Now subtract eq(2') from eq(1'). the terms " 6x " will cancel each other, and you will get a single equation for only one unknown "y".

    (It is how the Elimination method works)


    9y - 5y = 234 - 180

       4y   =   54

        y   =   54/4  = 13.5.


Then from eq(1)   2x = 78 - 3*13.5 = 37.5  ====>  x = 37.5/2 = 18.75.


<U>Answer</U>.  x= {{{18}}}{{{3/4}}} = 18.75;  y = {{{13}}}{{{1/2}}} = 13.5.
</pre>

Solved.


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I am very surprised on how the tutor @LoverMath1 treats these problems on solving equation systems.


By applying this "pluggable solver", she turns / transforms / converts very serious educational task of teaching students 
into some unreadable and nonsensical text.