How many solutions does the equation 3x-9=7x-4 have?

Which statement best describes the polynomial

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

∆red ≅ ∆ by rule will give brainiest if possible