Question 1126684
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<pre>
6x - y = -5      (1)
6x + y = -7      (2)


From eq(2),  express  y = -7 - 6x  and substitute it into equation (1). You will get


6x - (-7-6x) = -5,


6x + 6x + 7 = -5

12x = -5 - 7 = -12  ====>  x = {{{-12/12}}} = -1.


Now substitute this value of x into eq(2) to get


{{6*(-1) + y}}} = -7,    or

-6 + y = -7

y = -7 + 6 = -1.


<U>Answer</U>.  The solution is  x= -1;  y= -1.


    Check the solution on your own by substituting the found values into the original equations.

    Do it on your own (I just did it mentally).
</pre>

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&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF= http://www.algebra.com/algebra/homework/coordinate/lessons/Solution-of-the-lin-system-of-two-eqns-by-the-Subst-method.lesson>Solution of the linear system of two equations in two unknowns by the Substitution method</A> 

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