Question

aldie me podria resolver el sigiente ejerciosio pls?
3a -[a + b -(a-b) + (2a + b) - a]
doy 20 ptos

Answer 1

3a -[a + b -(a-b) + (2a + b) - a]=
3a-[a+b-a+b+2a+b-a]
3a-[a+3b]
3a-a-3b
2a-3b

Answer 2

3a-[a+b-(a-b)+(2a+b)-a]
3a-[a+b-a+b+2a+b-a]
3a-[3b+a]
3a-3b-a
2a-3b