Solve the simultaneous equations − x + 4 y = − 12 x + 2 y = − 18 what is x what is y
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Answér :
x = -8 , y = -5
Solution :
Here ,
The given equations are ;
-x + 4y = -12 -------(1)
x + 2y = -18 ---------(2)
Now ,
Adding eq-(1) and (2) , we get ;
=> -x + 4y + x + 2y = -12 + (-18)
=> 4y + 2y = -12 - 18
=> 6y = -30
=> y = -30/6
=> y = -5
Now ,
Putting y = -5 in the eq-(2) , we get ;
=> x + 2y = -18
=> x + 2•(-5) = -18
=> x - 10 = -18
=> x = -18 + 10
=> x = -8
Hence ,
x = -8 , y = -5
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