SOLUTION: I am an older student and just can't get the answer to this question. Solve using the elimination method. Show your work. If the system has no solution or an infinite number of

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I am an older student and just can't get the answer to this question. Solve using the elimination method. Show your work. If the system has no solution or an infinite number of      Log On


   

Question 645038: I am an older student and just can't get the answer to this question.
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
-12x + 27y = 60
-6x – 6y = 30

Answer by MathTherapy(10551) About Me  (Show Source):
You can put this solution on YOUR website!

I am an older student and just can't get the answer to this question.
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
-12x + 27y = 60
-6x – 6y = 30

- 12x + 27y = 60 ----- eq (i)
- 6x - 6y = 30 ------- eq (ii)

- 12x + 27y = 60 ----- eq (i)
12x + 12y = - 60 ---- Multiplying eq (ii) by - 2 ------ eq (iii)
39y = 0 ------ Adding eqs (iii) and (i) to ELIMINATE x
y = highlight_green%280%29

- 12x + 27(0) = 60 ---- Sustituting 0 for y in eq (i)

- 12x = 60

x = 60%2F-+12, or highlight_green%28-+5%29

You can do the check!!

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