21+x+43−x4⋅21+x+443−x2x+2+3−xx+5x−28x−27xxx=7x−4=4⋅7x−4⋅4=28x−16=28x−16=−16−5=−21=−27−21=97multiply ALL terms by 4.cancel out the denominatorssimplify left sidemove the 28x to the left side and 5 to the rightsimplify left and right hand side divide both sides by −27
