We get rid of parentheses x+x/4-600000=0 We multiply all the terms by the denominator x*4+x-600000*4=0 We add all the numbers together, and all the variables x+x*4-2400000=0 Wy multiply elements x+4x-2400000=0 We add all the numbers together, and all the variables 5x-2400000=0 We move all terms containing x to the left, all other terms to the right 5x=2400000 x=2400000/5 x=480000