How do you solve the following system: 4x-5y= -1, 5x+2y=12 4x−5y=−1,5x+2y=12?

1 Answer
G_Ozdilek
Apr 12, 2017

Combine these two equations and get the solution.

Explanation:

When you multiply 2 (the first) and 5 (the second), you will get:
8x-10y=-28x−10y=−2
25x+10y=6025x+10y=60

Combine the above equations:
8x+25x=588x+25x=58
x=58/33x=5833

Put this value in the first equation
((4*58)/(33))-5y=-1(4⋅5833)−5y=−1
-5y=(-33-232)/33−5y=−33−23233
y=-265/165y=−265165

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