Solve and check the following equation. Show all your work. 5x - 2(4x + 1) = 7(2x - 3) - 15​

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 =

When y’all answer can y’all explain too !

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)