这两道题怎么做啊，急!!!

Answer 1

3.74×4.8+6.2×3.74-3.74 =3.74×（4.8+6.2-1） =3.74×10 =37.4 4949×85÷49-85 =4949÷49×85-85 =101×85-85 =（101-1）×85 =100×85 =8500

Answer 2

待续

追答