2/7+4/5= 10/9+12/3= 2/25+6/10×5/9= 1.1/3+4/9×3.3/4

2/7 + 4/5 = 10/35 + 28/35 = 48/35 = 1 13/35

10/9 + 12/3 = 10/9 + 36/9 = 46/9 = 5 1/9

maaf tidak dijawab semua '-
semoga membantu :)

2/7+4/5=10/35+28/35=38/35=1 3/35
10/9+12/3=10/9+36/9=49/9=5 4/9
(2/25+6/10)×5/9=4/50+30/50=34/50:2=17/25
(1 1/3+4/9)×3 3/4=4/3+4/9=12/9+4/9=16/9×3 3/4=16/9×15/4=16×15=240.9×4=36
=240/36=120/18=60/9=20/3=6 2/3
semoga membantu