Question

How do you solve the following system: `7x - y = 10 , 5x-9y=-23`?

Answer 1

here is how,

Explanation:

`7x-y=10. . . . . . . . . . . . . . . . . . .(i)`
`5x-9y=-23. . . . . . . . . . . . . . . (ii)`

`5xx(i)-7xx(ii)=>`
`cancel(35x)-5y=50`
`cancel(35x)-63y=-161`
`->58y=211`
`->y=211/58`

`x=113/58`