Let this number be x. "Six less than seven times a number is equal to -20" can be represented by the equation 7x - 6 = -20. We need to solve for x. First, add 6 from each side so we can have the variables on a side and the numbers on the other: 7x - 6 + 6 = -20 + 6 7x = -14 Then, you divide each side by 7 so we can get the variable x alone on a side, and its value on the other side: (7x)/7 = -14/7 x = -2
You can re-check your answer (very important): 7x - 6 = 7 (-2) - 6 = -14-6 = -20 The answer has been approved.
