I have a problem. We're there is a triangle and it's balanced out with 3 x's and two -1s. And the other side has four normal ones and I need the equation and solution

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?