Question

i have another math question i need the answer by substitution
-3x-8y=20
-5x+y=19

Answer 1

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Answer 2

by substitution method
y=5x+19
putting it in another equation
we have
-3x-8(5x+19)=20
-3x-40x-152=20
-43x=172
x=-4
therefore y = -1