SOLUTION: y=-x+5 x-4y=10 How do I solve the sytem of equation using the subsitution method? Please show the work!

Question 20169: y=-x+5
x-4y=10
How do I solve the sytem of equation using the subsitution method? Please show the work!
Answer by elima(1433) (Show Source): You can put this solution on YOUR website!
y=-x+5
x-4y=10
Since they already give you what y = you will substitute that into the other eqution tofind x;
x-4(-x+5)=10
x+4x-20=10
5x-20=10
5x=30
x=6
Now we have our x, so we plug that into the other equation to get y;
y=-(6)+5
y=-1
Hope you understand
=)
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