The sum of Ken's, k, and Alan's, a, ages is 62. Ken is 31 years older than Alan. Which of these systems of equations below best describes the ages of Ken and
Alan?

147147 147 147 147 147

You move the constant to the right side and change its sign to be 9z= -6 -8. that’s the first step.the second step would be calculate the difference of -8-6 to get -14. you equation should now be 9z=-14the last step is to divide both sides by 9 to get z=-14/9hope this