I thought that too, 9 is like a halogen, it wants to resolve to 10 anyway it can like fluorine wants one last electron. So allow the 9 to rip one off of the neighboring numbers and then perform the calculation.
I thought that too, 9 is like a halogen, it wants to resolve to 10 anyway it can like fluorine wants one last electron. So allow the 9 to rip one off of the neighboring numbers and then perform the calculation.
My wife is wayyyyy more forgiving than my mother lol.
Similarly
https://www.cnn.com/2013/09/04/world/americas/mexico-bus-driver-slayings/index.html