If a plus a plus b plus b equals 26 and b plus b plus c equals 22 and c plus c plus c plus c plus b?
2a + 2b = 26
2b + c = 22 ===> b = 11 - c/2
4c + 2b = 46 ===> b = 23 - 2c
From the 2nd and 3rd equations: 11 - c/2 = 23 - 2c
22 - c = 46 - 4c
22 - 46 = -4c + c > -24 = -3c.> c =...