Question

Solve x + 3y = 9. 3x – 3y = –13

Answer 1

`Question \ 1) \ x + 3y = 9`


`x=9-3y`
`|Subtract \ 3y \ from \ both \ sides|`


`Question \ 2) \ 3x - 3y = -13`


`3(x-y)=-13`
`|Factor \ out \ the \ common \ term \ 3|`


`x-y= (13)/(3)`
`|Divide \ both \ sides \ by \ 3|`


`x=- (13)/(3)+y`
`|Add \ y \ to \ both \ sides|`


`x=y- (13)/(3)`
`|Regroup \ terms|`