化简:3a×4b-2a×4b/2-3a×b/2

问题描述:

化简:3a×4b-2a×4b/2-3a×b/2

3a×4b-2a×4b/2-3a×b/2
=12ab+4ab-1.5ab
=16ab-1.5ab
=14.5ab