SOLUTION: why is 4y-4x equal to 4(x-y)

Question 672106: why is 4y-4x equal to 4(x-y)
Answer by ReadingBoosters(3246) (Show Source): You can put this solution on YOUR website!
It is a common multiplier to each variable, so it can be factored out of each variable.
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Consider simplifying a fraction, they both have a common factor 6,

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To your example, let's say its 32-12 then it is equal to 4(8-3), which is equal to 4(8) - 4(3).
In that example, y is 8 and x is 3
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