Question

Given that 9x-4y=20, find y when x=-2

Answer 1

Answer:

9y-4y= 20

5y= 20

y= 20/5

y=4

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Answer 2

Answer:

9(-2)-4y=20

-18-4y=20

-4y=20+18

-4y=38

y=-38/4

y=19/4

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