X + 11 = X + 5
If that is your question, then your answer is: Not Solvable.
This is because, if both sides are addition, than X would have to be two different numbers in order to get them the same. However, you can't do that, because in math a single letter represents the same number. X is just a replacement for a single number, it can't mean two different ones.
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x = 5, y = -1
1/5+1/11 = 11/55+5/55 = 16/55
12 + 5 equals...
-2x+5 x=-3 --original equation-2(-3)+5 --use substitution property6+5 --solve.11 --final answer is 11.
5