SOLUTION: Solve the system by substitution.
3x - y = -7
x + y = -9
Algebra.Com
Question 72936: Solve the system by substitution.
3x - y = -7
x + y = -9
Answer by funmath(2933) (Show Source): You can put this solution on YOUR website!
Solve the system by substitution.
3x - y = -7
x + y = -9
Solve the second equation for x or y, whichever you prefer, there's a few choices. I'm going with x
x+y-y=-9-y
x=-9-y Now substitute this in for x in the first equation and solve for y.
:
Now substitute this into the second equation for y and solve for x.
The solution to the system is: (x,y)=(-4,-5)
Happy Calculating!!!!
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