31 per 4 + 24 per 5 dikurangi 3 per 5 sama demgan​

3 1/2 + 2 4/5 – 3/5

= 7/2 + 14/5 – 3/5

= 35/10 + 28/10 – 15/10

= 63/10 – 15/10

= 48/10 = 4 8/10 = 4 4/5

Jawaban:

5 9/20

Penjelasan dengan langkah-langkah:

3 1/4 + 2 4/5 – 3/5

= 13/4 + 14/5 – 3/5

= 65/20 + 56/20 – 12/20

= 109/20

= 5 9/20