berapa hasil pecahan dari 2/3+3/10=..... dan 5/6-3/5=...........

2/3 + 3/10 = 20/30 + 9/30 = 29/30
5/6 - 3/5 = 25/30 - 18/30 = 7/30

[tex] \frac{2}{3} + \frac{3}{10} = \frac{20+9}{30} = \frac{29}{30} [/tex]

[tex] \frac{5}{6} - \frac{3}{5} = \frac{25-18}{30} = \frac{7}{30} [/tex]