脱式计算11分之4+5分之2+19分之7+5分之1

2025-06-27 04:23:44
推荐回答(1个)
回答1:

4/11+2/5+7/19+1/5
=4/11+3/5+7/19
=20/55+33/55+7/19
=53/55+7/19
=1007/1045+385/1045
=1392/1045