Yes. Any problem you see with variables (any letter in a problem) is an algebraic equation.
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It is simply: 2x
12x + 5 - 2x =(12x - 2x) + 5 =10x + 5 =5 (2x + 1)
(10)(2x)
2x + 7
It is simply 2x+20 which is an algebraic expression that has no equality sign.