Question

怎么简便怎么算

Answer 1

(4/5+1/5)×7/8

追答

=1×7/8=7/8

Answer 2

＝4/5×7/8+7/8×1/5
＝7/8×（4/5+1/5）
＝7/8×1＝7/8

Answer 3

4/5×7/8+7/8×1/5
=7/8×(4/5+1/5)
=7/8

Answer 4

=7/8 （4/5 +1/5）
=7/8 *1
=7/8

Answer 5

7/8×（4/5+1/5）
=7/8

Answer 6

=7/8(4/5+1/5)
=7/8