hitunglah 2/7 + 1. 2/3 =

= 2/7 + 1 2/3.
= 2/7 + 5/3.
= 6/21 + 35/21.
= 41/21.
= 1 20/21.

2/7 + 1/1 x 2/3
= 2/7 + 2/3
= 6/21 + 14/21
= 20/21

semoga membantu ^^