Carl purchased a $276 car stereo at Worst Buy. He paid $47 at the time of purchase and agreed to pay the balance in 12 equal monthly payments. The finance charge was
11% simple interest. What was the amount of each payment?

Remember, you can do anything to an equation as long as you do it to both sidesminus 36 from both sides4.5(8-x)=66-2.5(3x+24)distribute36-4.5x=66-7.5x-60add like terms36-4.5x=-7.5x+6add 7.5x to both sides36+3x=6minus 36 from both sides3x=-30divide both sides by 3x=-10