Solve using the Linear Combination Method (4x+y=4 2x+y=6) What is the answer?

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Answer 1 · 2018-02-03T01:21:10

$x = - 1$ $x=-1$
$y = 8$ $y=8$

$4 x + y = 4$ $4x+y=4$
-( $2 x + y = 6$ $2x+y=6$ )

$(4 - 2) x + (1 - 1) y = 4 - 6$ $(4-2)x+(1-1)y=4-6$

$2 x + 0 y = - 2$ $2x+color(red)(0y)=-2$
$\frac{2 x}{2} = - \frac{2}{2}$ $[2x]/2=-2/2$

$x = - 1$ $x=-1$

$- 2 + y = 6, - 4 + y = 4$ $-2+y=6 , -4+y=4$

$- 2 + 2 + y = 6 + 2 \Rightarrow y = 8, y = 0$ $-2+2+y=6+2=>y=8, y=0$

Check The answers, And $y = 8$ $y = 8$ is correct