SOLUTION: solve the system: 3x - 11y = 9 -9x + 33y = 18

Algebra ->  Linear-equations -> SOLUTION: solve the system: 3x - 11y = 9 -9x + 33y = 18      Log On


   

Question 487039: solve the system:
3x - 11y = 9
-9x + 33y = 18
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
(1) +3x+-+11y+=+9+
(2) -9x+%2B+33y+=+18+
Multiply both sides of (1) by +3+
and add the equations
(1) +9x+-+33y+=+27+
(2) -9x+%2B+33y+=+18+
+0+=+45+
not true. There is no solution, so the
lines must be parallel
(1) +33y+=+9x+-+27+
(1) +y+=+%289%2F33%29%2Ax+-+27%2F33+
and
(2) +33y+=+9x+%2B+18+
(2) +y+=+%289%2F33%29x+%2B+18%2F33+
They have the same slope