Plz help I will mark brainliest if correct

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 following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

What is the y-intercept of the line with the equation 3x + 4y = 12?