SOLUTION: could you explain step by step how to simplify each exspression as far as you can,multiply out brackets,collect like terms please 9x-3(7y-4x) regards rob

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Question 694799: could you explain step by step
how to simplify each exspression as far as you can,multiply out brackets,collect like terms please
9x-3(7y-4x)
regards rob

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
9x-3(7y-4x)
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Multiply by 3 to get:
= 9x - 21y + 12x
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Combine "like" terms:
= 21x -21y
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Factor is you want to:
= 21(x-y)
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Cheers,
Stan H.