3per 2 ditambah 3 per 4dikurang 3per 10 dibagi 1per 30 sama dengan

3/2 + 3/4 – 3/10 : 1/30 =
3/2 + 3/4 – 3/10 × 30/1 =
3/2 + 3/4 – 90/10 =
3/2 + 3/4 – 9 =
6/4 – 3/4 – 9 =
3/4 – 9 =
3/4 – 36/4 = – 33/4 = -8 1/4