To determine which of the given equations has exactly one solution, we can analyze each equation:
-
\(3x + 4 = 4x + 3\)
Rearranging gives:
\(3x + 4 - 4x = 3\)
\(-x + 4 = 3\)
\(-x = 3 - 4\)
\(-x = -1\)
\(x = 1\)
This equation has exactly one solution, \(x = 1\). -
\(4x + 3 = 4x + 3\)
This is true for all values of \(x\) (an identity), so it has infinitely many solutions. -
\(3x + 4 = 3x + 3\)
Rearranging gives:
\(3x + 4 - 3x = 3\)
\(4 = 3\)
This is a contradiction, so there are no solutions. -
\(3x + 4 = 3x + 4\)
This is also true for all values of \(x\) (another identity), so it has infinitely many solutions.
Based on the above analysis, the equation with exactly one solution is:
\(3x + 4 = 4x + 3\).