SOLUTION: Solve the system by substitution x-7y=-22 5x+2y=1 Thanks

Question 23545: Solve the system by substitution
x-7y=-22
5x+2y=1
Thanks
Answer by elima(1433) (Show Source): You can put this solution on YOUR website!
x-7y=-22
5x+2y=1
First we will solve eq.1 for x;
x-7y=-22
x=-22+7y
Now substitute this into the other eq. for x;
5(-22+7y)+2y=1
-110+35y+2y=1
-110+37y=1
37y=1+110
37Y=111
Y=3
Now that we know y, we can solve for x;
x-7(3)=-22
x-21=-22
x=-1
So we have;
x=-1,y=3
Hope you understand
=)

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