SOLUTION: factorise 20ax-15ay-4bx+3by

SOLUTION: factorise 20ax-15ay-4bx+3by

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Question 151898: factorise 20ax-15ay-4bx+3by
Answer by orca(409) (Show Source): You can put this solution on YOUR website!
First, the terms need to be re-grouped.
20ax -15ay -4bx + 3by
= (20ax -15ay) - (4bx - 3by)
= 5a(4x - 3y) - b(4x - 3y)
= (4x -3y)(5a - b)

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