Question

用简便计算(5/8-5/8x3/5)÷12/5

Answer 1

解：原式=[5/8x(1-3/5)]x5/12
=5/8x2/5x5/12
=5/48

Answer 2

(5/8-5/8x3/5)÷12/5
=5/8*(1-3/5)*5/12
=5/8*2/5*5/12
=1/4*5/12
=5/48

Answer 3

（5/8×1-5/8×3/5)÷12/5
5/8(1-3/5)÷12/5
5/8×2/5÷12/5
1/4÷12/5
1/4×5/12
5/48

Answer 4

5/8÷12-5/8×3/5÷12/5
=5/8×12-5/8×3/5×12/5

Answer 5

(5/8-5/8x3/5)÷12/5
=[﹙5／8﹚×﹙1-3／5﹚]×﹙5／12﹚
=﹙-1／4﹚×﹙5／12﹚
=-5／48