If 5x – 5x  3 = (124)(5y), what is y in terms of x?
A. x
B. x  6
C. x  3
D. 2x + 3
E. 2x + 6
y in terms of x
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Sorry how did you get this ,can u break it a bit further please?
=> 5^x[1  1/125] = 124*5^y
=> [5^x * 124]/125 = 124*5^y
5^x[1  1/125] became [5^x * 124]/125
Thanks
=> 5^x[1  1/125] = 124*5^y
=> [5^x * 124]/125 = 124*5^y
5^x[1  1/125] became [5^x * 124]/125
Thanks
aatech wrote:Just to clarify for others Q should be
5^x  5^[x3] = 124 * 5^y
=> 5^x  [5^x/5^3] = 124*5^y
=> 5^x[1  1/125] = 124*5^y
=> [5^x * 124]/125 = 124*5^y
=> 5^[x3]*124 = 124*5^y
so, y = x3
ANS C
Sorry worked it out, saw it wrong.
neilcao wrote:Sorry how did you get this ,can u break it a bit further please?
=> 5^x[1  1/125] = 124*5^y
=> [5^x * 124]/125 = 124*5^y
5^x[1  1/125] became [5^x * 124]/125
Thanks
aatech wrote:Just to clarify for others Q should be
5^x  5^[x3] = 124 * 5^y
=> 5^x  [5^x/5^3] = 124*5^y
=> 5^x[1  1/125] = 124*5^y
=> [5^x * 124]/125 = 124*5^y
=> 5^[x3]*124 = 124*5^y
so, y = x3
ANS C