9又8分之5减2.125减4又7分之2

9又8分之5减2.125减4又7分之2
=9+5/8-2.125-(4+2/7)
=9+5/8-2-0.125-4-2/7
=9+5/8-2-1/8-4-2/7
=9-2-4+5/8-1/8-2/7
=3+4/8-2/7
=3+1/2-2/7
=3+7/14-4/14
=3+3/14
=3又3/14
谢谢，请采纳

9又8分之5减2.125减4又7分之2
=9又5/8-2又1/8-4又2/7
=7又1/2-4又2/7
=7又7/14-4又4/14
=3又3/14本回答被网友采纳