For this one, you would need to isolate y on the left side of the equal sign. Here is how you solve it:
10-y= -36
first get the y by itself by subtracting 10 from each side.
10-y-10=-36-10
-y= -46
to make it a positive, multiply both sides by -1, this can be done anytime in math you need to go from negative to positive or vise versa.
-1(-y)= -1(-46)
y= 46
So now you can plug it in to check your answer
10-46=-36
which proves to be true, since the 10 is in the front, you will be taking 46 away from 10 giving you a negative number as an answer.
hope this helps!
