Karen has 12 apples. she gives 3 to john, 4 to lennard, and 2 to tracy. she then takes away 2 from john, 1 from lennard, and 1 from tracy. how many apples does she have now?

She has 12 apples
Let's calculate how many apples the other people have and subtract how many she took away
John; 3-2=1
Lenard; 4-1=3
Tracy; 2-1=1
Now let's add the answers up to know how many she has given out
1+3+1=5
So that means she has lost 5 apples. To find how many she has left will be the total minus the apples given out.
12-5=7
She has 7 apples left
Hope that helped. Have a nice day