Question

Given that 2x-7y=30

Find Y when X=-3
Give your answer as an improper fraction, in its simplest form.

Answer 1

y = -
`(24)/(7)`

Explanation:

Substitute x = - 3 into the expression

2x - 7y = 30

2(- 3) - 7y = 30

- 6 - 7y = 30 ( add 6 to both sides )

- 7y = 36 ( divide both sides by - 7 )

y =
`(36)/(-7)` = -
`(36)/(7)`