Solving equations with algebra tiles: we first represent what’s on both sides of the equal sign using algebra tiles. There is an imaginary wall between the sides (where the equal sign is)

We next add 2x to both sides (to create 0x on the right)

Next we simplify (eliminate all zero pairs)

Next we eliminate the constant that’s on the same side as the x term (we place 4 blue squares on each side)

Next we simplify. We know that -x=2 so we can deduce (or divide both sides by the coefficient) that x=-2