Question 100963
h=5 t=h+b/2 b=h+t
.
t=5+b/2 replace h with 5 in both equations
b=5+t 
.
2t=10+b multiply each side by 2.
2t=10+5+t replace b with 5+t.
t=15 subtract t from each side and combine.
.
b=5+15=20
the fish was 5+15+20=40" long
Ed