Here are more examples of how to check your answers with Algebra Calculator. Feel free to try them now. For x+6=2x+3, check (correct) solution x=3: x+6=2x+3 @ x=3 For x+6=2x+3, check (wrong) solution x=2: x+6=2x+3 @ x=2 For system of equations x+y=8 and y=x...