先将式子中的百分数化为小数,49.1%为0.491,括号内和为1.491,用这个数去除14251,得到无限不循环小数9558.014755
14251÷(1+49.1%)
=14251÷(1+491/1000)
=14251÷1491/1000
=14251/1491 *1000
=(14910-659)/1491 *1000
=(10- 659/1491)*1000
=10000-659000/1491
=10000-441 1469/1491
=9559-1469/1491
=9558 22/1491
变成分数算 49.1%=2/1 大约 估算 把除法变成乘法
14251÷(1+49.1%)
=14251÷1.491
=9558.0147551979
1+49.1%÷4251