2. In rhombus $\mathrm{JKLM}, \mathrm{JK}=3 \mathrm{x}+9$ meters and $\mathrm{KL}=11 \mathrm{x}-7$ meters. What is the perimeter of the rhombus?

Step 1 ：Set up the equation: 3x + 9 = 11x - 7

Step 2 ：Solve the equation: x = 2

Step 3 ：Substitute x back into the expression: 3(2) + 9 = 15 meters

Step 4 ：Calculate the perimeter: 4 x 15 = 60 meters

Step 5 ：\boxed{60}