I think you do not want to find the value of x and y from the two given equations. Only thing you want is to write the equations in their standard form only. Let us take one equation at a time and then write them in their standard form. In case of the first equation: y - 4 = - 3(x - 3) y - 4 = - 3x + 9 3x + y = 9 + 4 3x + y = 13 Now we take the second equation y + 9 = 2(x + 5) y + 9 = 2x + 10 2x - y = 9 - 10 2x - y = -1 These are the two standard form of the given equations.