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View Full Version : Substitution or Elimination


guerita2007
Sep 4, 2007, 05:27 PM
y=-2x-3
4x+3y=3

someone help me with my homework!!

Capuchin
Sep 4, 2007, 11:43 PM
1) y=-2x-3
2) 4x+3y=3

multiplying 1) by 2 we get:

3) 2y=-4x-6

rearranging:

4) 2y+4x=-6

If you subtract 4) from 2) you should get an equation containing only y. The rest should be trivial.