Tinh toan voi ba phan so hon hop, hien thi ket qua o dang phan so va thap phan.
Nhap so nguyen, tu so va mau so cho moi phan so, chon phep tinh giua chung va nhan ket qua o dang phan so va thap phan.
Vi du: tinh (1 1/2) + (2/3) x (1 1/4). Nhap phan so 1: so nguyen=1, tu=1, mau=2. Chon phep cong. Phan so 2: tu=2, mau=3. Chon phep nhan. Phan so 3: so nguyen=1, tu=1, mau=4. Ket qua: 2 1/6 xap xi 2.167.
