Y = -3
x - 5y = 7
I have the answer I don’t know how to show my work
2 answers:
Answer:
Step-by-step explanation:
To use substitution in this problem, you find the Y which ='s -3. That we have clear. Now, the second equation becomes x - 5(-3) =7. A negative times a negative is a positive, so 15. Now, we have x + 15 = 7. Subtract 15 from 7 to get x = -8. Your coordinates, or your answer, will be (-8, -3)
Answer:
(x, y) = (-8, -3)
Step-by-step explanation:
"Show your work" means write down the work you did.
Very likely, you put -3 where y is in the second equation. That is what "substitution" means.
x -5(-3) = 7
x +15 = 7 . . . simplify
x = -8 . . . . . subtract 15 from both sides
The solution to this system is ...
(x, y) = (-8, -3)
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