Respuesta :

Answer:

count all of the weight on the right side, subtract 4 pounds from both sides, and divide it by 2.

Step-by-step explanation:

The weight of a turtle equals to 1+7=8unit. Remove 4 from each side since they both have one, now leaving 3 turtles on one side, whereas the other side has 3(1+7). Divided each side by 3, so one turtle has a weight of 8unit.