SOLUTION: Solve the system 3x-y=-1 2x+3y=-30 A.(8,3) B.(-8,-3) C.(3,8) D.(-3,-8)

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Solve the system 3x-y=-1 2x+3y=-30 A.(8,3) B.(-8,-3) C.(3,8) D.(-3,-8)      Log On


   

Question 207477This question is from textbook
: Solve the system 3x-y=-1
2x+3y=-30
A.(8,3)
B.(-8,-3)
C.(3,8)
D.(-3,-8) This question is from textbook

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
3x-y=-1 multiply by 3 & add.
2x+3y=-30
9x-3y=-3
-------------------
11x=-33
x=-33/11
x=-3 ans.
3*-3-y=-1
-9-y=-1
-y=9-1
-y=8
y=-8 ans.
Proof:
2*-3+3*-8=-30
-6-24=-30
-30=-30