You can solve 2x + 3 = 5 and that has no y in it! Or maybe you can't!
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The given expression has no solution because without an equality sign it can't be considered to be an equation.
Without an equality sign the given terms can't be considered to be an equation
You have one equation in two unknowns. There is no solution possible without a second (independent) equation in the same two unknowns.
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Select any three values of x in the domain of the equation. Solve the equation at these three points for the other variable, y. Then each (x, y) will be an ordered pair that is a solution of the equation.