we are given
[tex]-12x-54y[/tex]
Since, we have to factor out -14
So, we will make both terms multiple of -14
so, we will multiply top and bottom of each terms by -14
[tex]-12x-54y=\frac{-14}{-14}\times -12x-\frac{-14}{-14}\times 54y[/tex]
we can also write as
[tex]-12x-54y=-14\times \frac{-12x}{-14}-(-14)\times \frac{54y}{-14}[/tex]
now, we can factor out -14
[tex]-12x-54y=-14\times (\frac{-12x}{-14}-\frac{54y}{-14})[/tex]
now, we can simplify it
[tex]-12x-54y=-14\times (\frac{6x}{7}+\frac{27y}{7})[/tex]..............Answer