Question

ai giải giúp mình

tính tổng

C=2+1/1+1/2+1/1+1/2

giúp mình cái

Answer 1

\(C=2+\dfrac{1}{1}+\dfrac{1}{2}+\dfrac{1}{1}+\dfrac{1}{2}\)

\(=2+\left(\dfrac{1}{1}+\dfrac{1}{1}\right)+\left(\dfrac{1}{2}+\dfrac{1}{2}\right)\)

\(=2+\left(1+1\right)+1\)

\(=2+2+1\)

= 5