\left. \begin{array} { l } { 6 - 48 + 62 - 24 = 23 } \\ { 71 - 25 + 33 - 16 = 63 } \\ { 46 - 3 + 65 - 59 = 5 } \\ { 64 - 56 + 64 - 55 = 17 } \\ { 11 - 7 + 31 - 6 = 25 } \\ { 53 - 9 + 22 - 13 = 53 } \\ { 52 - 24 + 92 - 74 = 36 } \\ { 94 - 36 + 30 - 7 = 81 } \\ { 74 - 29 + 45 - 8 = 82 } \\ { 62 - 27 + 83 - 44 = 71 } \end{array} \right.
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