[ Answer ]
[ Explanation ]
-----------------------------------------
7e - 4 + 4 = 31 + 4
7e = 35
=
E = 5
Answer:
5
Explanation:
You need to get E by itself. Add 4 from each side
7e-4=31
+4 +4
Now we have 7e=35
we still need to get e by itself, so divide each side by 7
7e=35
/7 /7
e=5
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