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Solve the system by elimination:

4x + 3y = -1
2x – 5y = 19


Sagot :

Mlcparra16viz
4x + 3y = -1 ...[1]
2x - 5y = 19 ... [2]

[1] - 2[2]
4x + 3y = -1
-4x +10y = -38
       13y = -39
         y = -3
We substitute this to the first equation:
4x - 9 = -1
4x = 8
x = 2