Jika a . b . c = 1 maka ekspresi.

$frac{1}{1+a+ b^{-1} }$ + $frac{1}{1+b+ c^{-1} }$ + $frac{1}{1+c+ a^{-1} }$
sama dengan..
a. -1
b. 1
c. $frac{1}{a.b} }$
d. $frac{1}{b.c} }$
e. $frac{1}{c.a} }$

Jika a . b . c = 1 maka ekspresi.

Jawaban Terkonfirmasi

Jawab

a.b.c = 1
1/c = (ab)

$frac{1}{1 + a + frac{1}{b} }, + frac{1}{1 + b + frac{1}{c} }, + frac{1}{1+ c + frac{1}{a} } = \ frac{b}{b + ab +1}, + frac{1}{1+ b + ab} , + frac{1}{1 + ab + frac{1}{a} }\ frac{b}{b + ab +1}, + frac{1}{1+ b + ab} , + frac{ab}{ab +1 +b}\ = frac{b+1 + ab }{b + ab + 1} \ = 1$