First, move x to one side of the equation by doing inverse operations 6x-5+9x=7 The combine like terms 6x+9x-5=7 15x-5=7 Then move 5 to the right side of the equation by adding 5 to both sides 15x=7+5 15x=12 Now divide by 15 on both sides to isolate x 15x/15=12/15 x=4/5