a) 0,(37)+0,(62) = 1
Có 0.(37)=\(\frac{37}{99}\)và 0.(62) = \(\frac{62}{99}\)
\(\frac{37}{99}\)+ \(\frac{62}{99}\)= 1
\(\Rightarrow0,\left(37\right)+0.\left(62\right)=1\)
b)\(0,\left(37\right)\times3=1\)
Có: \(0,\left(37\right)=\frac{37}{99}\)
\(\frac{37}{99}\times3=1\)
\(\Rightarrow0\left(37\right)\times3=1\)