Respuesta :

emjaya
(1/3)r + (2/3)r = -2 -1
1r = -3
r = -3
Hope this helps
meganok33
i got r = -0.33333333333
you would combine the r to get 3/3r+1
then subtract the 1 over then you would have 3/3r=-3 then divied that by 3/3 and that would cancel out the top 3/3's then it would be r = -0.33333333333