It looks like the goal here would be to find out the value of "e" in the eqaution.
To do this, we simply need to get the "e" by itself on one side of the equation, and then simplify.
We start with this,
57 - 46 + e = 98
First, let's combine the 57 and 46 by completing the subtraction. Then we have,
11 + e = 98
Remember that our goal is to isolate the "e" on one side of the equation, so let's subtract 11 from both sides. Now we have
e = 98 - 11
e = 87
So the value of e is 87. We can check this by plugging this value back into the original equation and verify that it is correct.
57 - 46 + 87 = 98
11 + 87 = 98
98 = 98