The answer can be explained like this
Step-by-step explanation:
Here,X=6 Y=5
12+X=12+6=18
3x+y=3×6+5=23
4y-10=4×5-10=10
1/2xy=1/2×6×5=30/2=15
What your gonna want to do is any where there is an x you are going to put in the number from the x column. You then solve for y and that is the answer for that number you used for x that would be your y
