SOLUTION: Did I start out this problem correctly? Find the numerator:(-3x)/(5x-20)=(?)/(40-10x) I factored what I could and got this:(-3x)/[5(x-4)]=(?)/[-10(x-4)] I am not sure what

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Question 1056647: Did I start out this problem correctly?
Find the numerator:(-3x)/(5x-20)=(?)/(40-10x)
I factored what I could and got this:(-3x)/[5(x-4)]=(?)/[-10(x-4)]
I am not sure what to do beyond this point.
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39618)   (Show Source): You can put this solution on YOUR website!
Trust what you learned about fractions, regardless if with variable expressions or plainly written real numbers.

, and you want to know v.






The negative factor,...










Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

Did I start out this problem correctly?
Find the numerator:(-3x)/(5x-20)=(?)/(40-10x)
I factored what I could and got this:(-3x)/[5(x-4)]=(?)/[-10(x-4)]
I am not sure what to do beyond this point.
Where to go next!

Multiply the fraction: , by , to get: , and subsequently:  

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