Question

Given that

7
x
−
2
y
=
35

Find
y
when
x
=
−
9

Answer 1

y = - 49

Explanation:

Given

7x - 2y = 35 ← substitute x = - 9 into the equation

7(- 9) - 2y = 35, that is

- 63 - 2y = 35 ( add 63 to both sides )

- 2y = 98 ( divide both sides by - 2 )

y = - 49

Answer 2

`\boxed{y = -49}`

Explanation:

=>
`7x-2y = 25`

Given that x = -9

=>
`7(-9)-2y = 35`

=>
`-63 -2y = 35`

Adding 63 to both sides

=>
`-2y = 35+63`

=>
`-2y = 98`

Dividing both sides by -2

=>
`y = 98/-2`

=>
`y = -49`