1.1*4又21/97+40.9/5又2/19-4.09*9/97

问题描述:

1.1*4又21/97+40.9/5又2/19-4.09*9/97

1.1*4又21/97+40.9/5又2/19-4.09*9/97
=1.1*4+1.1*21/97+4.09*190/97-4.09*9/97
=4.4+(1.1*21+4.09*181)/97
=4.4+7.87
=12.27