⭐Hola User ________________
⭐Here is your Answer...!!!
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↪Actually welcome to the concept of the linear equation in one variable ..
↪The given expression is ..
↪2b + 4 -b -4
↪solving and adding all the like terms we get as ..
↪(2b - b ) + ( 4 -4)
=》 ( b ) + 0
↪thus the Answer is b
↪Option A.) b
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