Question 896395
L = 2J
L + J = 96
Substitute the value of L from the first equation into the second.
L + J = 96
(2J) + J = 96
3J = 96
Divide each side by 3
J = 32
Janessa's dog weighs 32lb.  Latisha's dog weighs twice that, or 64lb.
32 + 64 = 96