willlockwood9 willlockwood9

14-09-2021
Mathematics

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Using elimination method, what will be the value of y after solving -x - y = 5 and -x + 4y = 15?

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sqdancefan sqdancefan

14-09-2021

9514 1404 393

Answer:

y = 2

Step-by-step explanation:

The variable x can be eliminated by subtracting the first equation from the second.

(-x +4y) -(-x -y) = (15) -(5)

5y = 10 . . . . . . . simplify

y = 2 . . . . . . . . . divide by 5

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