3a+2b=3,则8-6a-4b=__

问题描述:

3a+2b=3,则8-6a-4b=__

8-2(3a+2b)=8-3X2=8-6=2

-6a-4b=-6 8-6a-4b=2

8-6a-4b
=8-2(3a+2b)
=8-2*3
=2

8-6a-4b=8-2(3a+2b)=8-2*3=2