What number is missing? explanation please

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 =

Solve the equation. 2x - 8(x+1)= 6(2x - 3)

Joey is asked to name a quadrilateral that is also a rhombus and has 2 pairs of parallel sides.should be his answer