`1/3 xx 4/5 + 1/3 xx 6/5 - 1/3`
`=1/3 xx 4/5 + 1/3 xx 6/5 - 1/3xx1`
`= 1/3 xx ( 4/5 + 6/5 -1)`
`= 1/3 xx 1`
`=1/3`
\(\dfrac{1}{3}\times\dfrac{4}{5}+\dfrac{1}{3}\times\dfrac{6}{5}-\dfrac{1}{3}=\dfrac{1}{3}\times\left(\dfrac{4}{5}+\dfrac{6}{5}-1\right)=\dfrac{1}{3}\times1=\dfrac{1}{3}\)
\(\dfrac{1}{3}.\dfrac{4}{5}+\dfrac{1}{3}.\dfrac{6}{5}-\dfrac{1}{3}\)
\(=\dfrac{1}{3}.\left(\dfrac{4}{5}+\dfrac{6}{5}\right)-\dfrac{1}{3}\)
\(=\dfrac{1}{3}.2-\dfrac{1}{3}\)
\(=\dfrac{2}{3}-\dfrac{1}{3}=\dfrac{1}{3}\)
13×45+13×65−1313×45+13×65-13
=13×45+13×65−13×1=13×45+13×65-13×1
=13×(45+65−1)=13×(45+65-1)
=13×1=13×1
=13
