SOLUTION: xy-7x+3y-21

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Question 168145: xy-7x+3y-21
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
xy-7x+3y-21
Group terms:
(xy-7x)+(3y-21)
Factor each sub-group:
x(y-7)+3(y-7)
Factor out (y-7):
(y-7)(x+3)