Solve for x: 243 x - 9 = x/729 - 8 Put each term in x/729 - 8 over the common denominator 729: x/729 - 8 = x/729 - (5832)/729: 243 x - 9 = x/729 - (5832)/729 x/729 - (5832)/729 = (x - 5832)/729: 243 x - 9 = (x - 5832)/729 Multiply both sides by 729: 729 (243 x - 9) = (729 (x - 5832))/729 (729 (x - 5832))/729 = 729/729×(x - 5832) = x - 5832: 729 (243 x - 9) = x - 5832 Expand out terms of the left hand side: 177147 x - 6561 = x - 5832 Subtract x from both sides: (177147 x - x) - 6561 = (x - x) - 5832 177147 x - x = 177146 x: 177146 x - 6561 = (x - x) - 5832 x - x = 0: 177146 x - 6561 = -5832 Add 6561 to both sides: 177146 x + (6561 - 6561) = 6561 - 5832 6561 - 6561 = 0: 177146 x = 6561 - 5832 6561 - 5832 = 729: 177146 x = 729 Divide both sides of 177146 x = 729 by 177146: (177146 x)/177146 = 729/177146 177146/177146 = 1: Answer: x = 729/177146