7th Grade Math Multi Step Equations

Question

If the perimeter of the triangle is 139. Find the measure of each side. Here is the picture.

Thank you! :)

Answer 1

6x-5 = 139

6x = 134

x = 134/6 = 22 1/3 = right side = RS

3x-5 = 3(134/6) - 5 = 67-5 = 62 = the top side = TR

2x = 2(134/6) = 66 2/3 = bottom side = TS