4 1 per 7+3 8per 9:7 per 9=

Maaf kalau salah yaa

4 1/7 + 3 8/9 ÷ 7/9
= 29/7 + 35/9 ÷ 7/9
= 261/63 + 245/63 ÷ 7/9
= 506/63 ÷ 7/9
= 506/63 × 9/7
= 4.554/441
= 10 144/441
= 10 48/147
= 10 16/49