Answer
3(9-3x+5y)
Step-by-step explanation:
So to factorise 27-9x+15y you need the HCM (highest common factor) of 27, 9 and 15.
HCM: 3
So you divide each of the numbers by 3 and you get
27 divided by 3= 9
9 divided by 3= 3
15 divided by 3= 5
So you take the HCM (3) and then the numbers divided by it and put it into brackets
3(9-3x+5y)
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