The number are (−5.4) and (+8.2). Sum of these two numbers are = (−5.4) + (+8.2) = -5.4 + 8.2 = 2.8 Now we are going to add this to the opposite number of (−2 3/4 ). (−2 3/4 ) = -11/4 = -2.75 now opposite number of -2.75 is 2.75 Thus, 2.8 + (2.75) = 2.8 + 2.75 = 5.55
