SOLUTION: {5x+9y=-54}
{2x+y=20}
A. find the solution, show your work
b. explain and graph.
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Question 1016389: {5x+9y=-54}
{2x+y=20}
A. find the solution, show your work
b. explain and graph.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
{5x+9y=-54}
{2x+y=20}
multiply the bottom by -9
5x+9y= -54
-18x-9y=180
-13x= -234
x=18
y= -16 substituting into second equation
substitute both into first to check
90-144=-54.
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