Question

才才在计算(72一口)÷9时,不小心把小括号看掉了,先算"口÷’结果得数是67。正？

Answer 1

囗=(72-67)x9
=5x9
=45
正确的结果是:
(72-45)÷9
=27÷9
=3

Answer 2

才才在计算(72一口)÷9时,不小心把小括号看掉了,先算"口÷’结果得数是67。正？
72一口÷9=67
口÷9=72-67
口÷9=5
口=5x9
口=45
正确的结果是:
(72-45)÷9
=27÷9
=3