Given the equation: x−7x−2=85 Multiply the equation sides by the denominator -7 + x we get: x−2=85x−835 Move free summands (without x) from left part to right part, we given: x=85x−819 Move the summands with the unknown x from the right part to the left part: 83x=−819 Divide both parts of the equation by 3/8