Question 398036
graph and check to solve the linear system.          3x+y=5        -x+y=-7

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3x+5y=5................1
-x+y=-7................2
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multiply (2) by 3
-3x+3y=-21
add to (1)
8y=-16
y=-2
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plug value of y in 2
-x-2=-7
-x=-5
x=5

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{{{drawing(300,300,-8,8,-8,8,circle(5,-2,0.2),graph(300,300,-8,8,-8,8,((-3x/5)+1),(x-7)))}}}