Question 999643
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For the following system, use the second equation to make a substitution for x in the first equation.
x + 5*y - 10 = 0
x = 2*y - 8
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The second equation just expresses x via y. Substitute it into the first equation. You will get


(2y -8) + 5y - 10 = 0.


Simplify and solve it for y.


7y = 18,


y = {{{18/7}}}.


Now, substitute this value of y into the second equation of the original system. You will get


x = 2*{{{18/7)}}} - {{{8}}} = . . . 


Please complete calculations yourself.


Do not forget to check the solution after completing.