y = 53
An easy way to solve this:
200 - 147 = y
First, drop down the y and =. You’ll want to reverse the plus sign (opposite of addition is subtraction). You subtract 147 from 147, and it cancels it out. You have to do the same thing to the other side, so subtract 147 from 200, which is 53.
Now, you’ll have y = 53, which is your answer! Hope this helps!