Write and solve a real-world additional problem including the sum of a rational number and it's additive inverse?

If Kayla has a red ribbon with length 25 9 m and piece of 5 7 m is cut from it and gave to Sania. Find how much long ribbon left with her? Kayla has a ribbon of length = 25 9 m. Part of ribbon give to Sania = 5 7 m. So, the length of the ribbon left = 25 9 m - 5 7 m = 175 63 = 130 63 m So, the ribbon left with Kayla is 2.06 m.