pohon faktrorisasi dari 1. 1/7+4/29= 2. 20/40+50/60= 3. 1/8+2/9= 4.25/80+15/60= tolong buat caranya ya terimakasih

1. 1/7 + 4/29
= 29/203 + 116/203
= 145/203

2. 20/40 + 50/60
= 60/120 + 100/120
= 160/120 = 1 1/3

3. 9/72 + 16/72
= 25/72

4. 75/240 + 60/240
= 135/240 = 27/48

maaf kalau salah