According to the question statement, the point was translated 5 units to the left, for this to happen, you need to substract 5 units to the x coordinate.
It is also said that the point was translated 10 units up, for this to happen, you need to add 10 units to the y coordinate.
It means that the translation that demonstrates this is:
[tex](x,y)\to(x-5,y+10)[/tex]