-8-3 + 3 + 1-7, read according to the meaning of sum: () read according to the meaning of operation: ()

-8-3 + 3 + 1-7, read according to the meaning of sum: () read according to the meaning of operation: ()

-8-3+3+1-7,
Read in the sense of and: (negative 8 plus negative 3 plus 3 plus 1 plus negative 7)
In the sense of operation: (minus 8 minus 3 plus 3 plus 1 minus 7)