SOLUTION: I need help solving these equations using the elimination method. x + 8y = 28 -x + 5y = 11 5x + 2y = -13 7x - 3y = 11 0.3x - 0.2y = 4 0.2x + 0.3y = 29/19 8x - 9y = 3

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: I need help solving these equations using the elimination method. x + 8y = 28 -x + 5y = 11 5x + 2y = -13 7x - 3y = 11 0.3x - 0.2y = 4 0.2x + 0.3y = 29/19 8x - 9y = 3      Log On


   

Question 391852: I need help solving these equations using the elimination method.
x + 8y = 28
-x + 5y = 11
5x + 2y = -13
7x - 3y = 11
0.3x - 0.2y = 4
0.2x + 0.3y = 29/19
8x - 9y = 32.5
7y - 2x = -10.5
0.05x + 0.25y = 11
0.15x + 0.05y = 12
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
The first pair of equations is quite simple, just add them to get

13y = 39, y = 3 --> x = 4

Do the others the same way. You might have to multiply one or both equations by a constant to cancel a variable out. For example, the next set of equations, you could multiply the first equation by 3 and the second equation by 2, then adding them to cancel y.