Question

[49+(31×56)]÷7的简便运算

[49+(31×56)]÷7的简便运算

Answer 1

[49十(3lx56)]÷7　　=49÷7+31×（56÷7）　　=7+31×8　　=7+248　　=255========================================柳浪闻莺各位芝麻竭诚为您解答您的采纳是我们坚持百度的动力========================================

Answer 2

[49+(31×56)]÷7的简便运算

=49/7+(31x56)/7
=7+31x8
=7+(30+1)x8
=7+240+8
=255

Answer 3

＝49÷7+31×(56÷7)
＝7+31×8
=7+248=255