For this case we must find an expression equivalent to:
[tex]36y-18x-108y + 54[/tex]
We add similar terms:
[tex]36y-108y-18x + 54 =[/tex]
Different signs are subtracted and the sign of the major is placed:
[tex]-72y-18x + 54[/tex]
Thus, an equivalent expression is:
[tex]-72y-18x + 54\\-18x-72y + 54[/tex]
Answer:
[tex]-18x-72y + 54[/tex]
