SOLUTION: I really do not understand how to do this can someone please help me,Thanks! Build each rational expression into an equivalent rational expression with the indicated denominato

Algebra ->  Rational-functions -> SOLUTION: I really do not understand how to do this can someone please help me,Thanks! Build each rational expression into an equivalent rational expression with the indicated denominato      Log On


   

Question 200317: I really do not understand how to do this can someone please help me,Thanks!
Build each rational expression into an equivalent rational
expression with the indicated denominator.
((-7yt)/(3x))=((?)/(36c^8))
Answer by RAY100(1637) About Me  (Show Source):
You can put this solution on YOUR website!
Hard to see with all the numbers,,so Lets simply to a/b =c/d
.
now b* SF = d,,,,and a* SF = c,,,(SF is scale factor)
.
In the problem (3x) * { 12c^8/x } = 36c^8,,,,,,,,,,,,,,,(SF = 12c^8/x)
.
Multiplying Num by SF,,,,,,,,,,(-7yt) * { 12c^8/x} = -84 c^8 y t /x = ?
.
checking by cross multiplying original
.
(-7yt) * ( 36 c^8) = (3x) ( -84 c^8 yt/x)
.
-252 c^8 yt = -252 c^8 yt ,,,,,ok