Question 177089
{{{2y+x=9}}} Start with the second equation.



{{{2y+2-y=9}}} Plug in {{{x=2-y}}}. In other words, replace each "x" with 2-y.



{{{y+2=9}}} Combine like terms on the left side.



{{{y=9-2}}} Subtract {{{2}}} from both sides.



{{{y=7}}} Combine like terms on the right side.



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{{{x=2-y}}} Go back to the first equation



{{{x=2-7}}} Plug in {{{y=7}}} 



{{{x=-5}}} Subtract



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Answer:



So the solutions are {{{x=-5}}} and {{{y=7}}} which form the ordered pair (-5,7)