Answer:
looking at it I think B is P from another angle
Answer:
The one that wieghs 10 grams
Step-by-step explanation:
To solve this question, what you would need to do is add 30 to both sides of the equation and then divide by 9, to find the solution.
You can check if it is correct by substituting the same value back into the original equation and seeing if the left hand side is equal to the right hand side.