"6x-28-2.5x+30.5"怎么化简?

问题描述:

"6x-28-2.5x+30.5"怎么化简?

6x-28-2.5x+30.5=3.5x+2.5

6x-28-2.5x+30.5
=(6-2.5)x+(30.5-28)
=3.5x+2.5.

6x-28-2.5x+30.5
=(6-2.5)x+(30.5-28)
=3.5x+2.5