Question

7/8×15分之4-7/15乘以八分之四用简便算法

7/8×15分之4-7/15乘以八分之四用简便算法

Answer 1

7/8×4/15-7/15×4/8
=(7×4-4×7)/(8×15)
=0.

Answer 2

(7/8*(4/15)-(7/15)*(4/8)
=(7*4)/(8*15)-(7*4)/(15*8)
=(7*4-7*4)/(8*15)
=0

Answer 3

7/8*4/15-7/15*4/8
=4/8*7/15-4/8*7/15
=0

Answer 4

7/8 x 4/15 - 7/15 x 4/8
=7/15 x 4/8 - 7/15 x 4/8
=0

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