It would be -1.
x+5y=−2;2x+y=5Step: Solvex+5y=−2for x:x+5y+−5y=−2+−5y(Add -5y to both sides)x=−5y−2Step: Substitute−5y−2forxin2x+y=5:2x+y=52(−5y−2)+y=5−9y−4=5(Simplify both sides of the equation)−9y−4+4=5+4(Add 4 to both sides)−9y=9−9y−9=9−9(Divide both sides by -9)y=−1Step: Substitute−1foryinx=−5y−2:x=−5y−2x=(−5)(−1)−2x=3(Simplify both sides of the equation)
