Step 1: combine like terms. The -3x and 2x can be combined, and the -4 and -5 can be combined, giving
6x-1 = -x -9
Step 2: move x’s to one side. Get rid of the -x on the right by adding x to both sides, giving
5x-1 = -9
Step 3: move numbers to opposite side. Add one to both sides
5x = -8
Step 4: isolate x. Divide both sides by 5
So, x = -8/5
You can plug this back in to the original equation to see if I️t works.