Solve the following? $" "x + y = 1$ $" "x + 3y = 9$

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Answer 1 · 2018-03-06T11:14:26

x is -3 and y is 4

Subtracting the equations we get,

$x + y = 1$
$-$ $-$ $-$
$x +3y=9$

$= -2y= -8$
$= y = 4$

$x = 1-4 = -3$

Solve the following? " "x + y = 1" "x + y = 1 " "x + 3y = 9" "x + 3y = 9