SOLUTION: solve by substitution 7x+5y=-20 x=1-2y

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Question 884456: solve by substitution 7x+5y=-20
x=1-2y
Answer by Fombitz(32388) About Me  (Show Source):
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+7x%2B5y=-20
++++x=1-2y
Substituting,
7%281-2y%29%2B5y=-20
7-14y%2B5y=-20
-9y=-27
highlight%28y=3%29
Then,
x=1-2%283%29
x=1-6
highlight%28x=-5%29