x+3/4x=30

7/4x=30

x=30/(7/4)

x= 17. 14

X= 17 (because fish is a strip, it should be round)

3/4x=3/4* 17

= 12.75

= 12 (since the fish is a fish, it should be round, not 4 to 5).

A: Wang Gang caught 17 and Wang Qiang caught 12.

I wish you progress in your study ~ ~ ...