Question

3.8×57-34×3.8-23×3.8等于多少？

Answer 1

3.8×57－（34+23）×3.8＝3.8×57－57×3.8＝216.6－216.6＝0

Answer 2

原式=3.8×(57-34-23)=3.8×0=0

Answer 3

3.8×57一34×3.8一23×3.8=0