Question 203697
1)  x+5y = 9,,,,,or x=9-5y
2)  3x -y =-5
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using  substitution,,,subst  (1)  into  (2)
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3(9-5y) -y = -5
27 -15y -y = -5
-16y = -32
y= 2
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subst  in  (1),,,x= 9 -5(2) = -1
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check,,,(1) (-1) +5(2) = 9,,,,ok
(2)  3(-1) -(2) = -5,,,,,ok
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another  technique  is  to  multiply equations  until adding or  substracting them eliminates one  variable
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Multiply (2) by 5,,,(2) 15x-5y = -25
(1) x+5y=9
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adding  (1) + (2),,,,16x = -16,,,,x=-1
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subst in (1) (-1) +5y = 9,,,5y = 10,,,y=2
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the  other  technique  is  to  graph  both  and note  intersection.
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Have  a  good  day