\(\dfrac{3}{5}\) + \(\dfrac{3}{2}\) + \(\dfrac{1}{5}\) + \(\dfrac{1}{2}\)

=(\(\dfrac{3}{5}\) + \(\dfrac{1}{5}\)) + (\(\dfrac{3}{2}\) + \(\dfrac{1}{2}\))

=\(\dfrac{4}{5}\) + \(\dfrac{4}{2}\)

=\(\dfrac{4}{5}\) + 2

=\(\dfrac{14}{5}\)

35+32+15+12=(35+15)+(32+12)

=45+42=245=145

or just group them ( quicker way to do )

(3/5 + 1/5 ) + ( 3/2 + 1/2)

= 4/ 5 + 2

= 14/5 

make all the denominator equal 10 so we have

3/5 + 3/2 + 1/5 + 1/2

= 6/ 10 + 15/10 + 2/10 + 5/10

= 28 /10

Simplify = 14/5 

= 14/5

\(\dfrac{3}{5}+\dfrac{3}{2}+\dfrac{1}{5}+\dfrac{1}{2}=\left(\dfrac{3}{5}+\dfrac{1}{5}\right)+\left(\dfrac{3}{2}+\dfrac{1}{2}\right)\)

\(=\dfrac{4}{5}+\dfrac{4}{2}=2\dfrac{4}{5}=\dfrac{14}{5}\)