SOLUTION: solve by substitution method x+y=-9 x-y=14

Question 45840: solve by substitution method
x+y=-9
x-y=14
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
solve by substitution method
1st: x+y=-9
2nd: x-y=14
Solve 2nd equation for x, as follows:
3rd: x=y+14
Substitute that value of "x" into 1st as follows:
4th: (y+14)+y=-9
2y==-23
y=-23/2
Substitute that back into 2nd to solve for "x"
5th: x-(-23/2)=14
x=-23/2+28/2
x=5/2
Final Answer: (5/2,-23/2)
Cheers,
Stan H.
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