Question

a+b+1=0
4a+2b+1=0 alguém sabe resolver?

Answer 1

a+b+1=0
então
a+b=-1
a=-1-b
substituindo
4(-1-b)+2b+1=0
-4-4b+2b+1=0
-4-2b+1=0
-4+1=2b
-3=2b
b=-3/2
logo
a-3/2+1=0
a=3/2+1
a=5/2