Cole found BC in triangle ABC his work shown below idenfity the first step in which shows an error Can anyone help me .? no links 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 =

Can someone me out here and the tell me the greatest common factor

How many solutions does the nonlinear system of equations graphed below have?