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1 answer:
Answer:
The answer is,
Step-by-step explanation:
F i r s t l y , y o u h a v e t o g e t r i d o f f r a c t i o n b y m u l t i p l y i n g ( r - 3 ) t o b o t h s i d e a n d e x p a n d o u t :
t × (r-3) = r/(r-3) × (r-3)
rt - 3t = r
T h e n y o u h a v e t o m o v e a l l t h e " r " v a r i a b l e s t o o n e s i d e a n d o t h e r v a r i a b l e s t o t h e o t h e r s i d e :
rt - r = 3t
Y o u c a n m a k e " r " a s a s u b j e c t b y t a k i n g o u t t h e c o m m o n t e r m , y o u c a n s e e t h a t t h e c o m m o n t e r m o n t h e l e f t i s " r " s o y o u c a n b r i n g o u t :
r(t-1) = 3t
r = 3t/(t-1)
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