I think it’s A cus it’s more general info about it that sums up the difference of the chronicle to the other ones i’m not sure tho
X = 42 - 19, so A - x = 23
Answer:

Step-by-step explanation:
Isolate the variable by doing operations to both sides of the equation.
The work is shown below:

Answer:
1:1
Step-by-step explanation:
They look exactly the same so they would equal each other