(1)(-180)十10
=-170
(2)(11/12--7/6+3/4--13/24)x(-48)
=(22/24-28/24+18/24-13/24)x(-48)
=(-1/24)x(-48)
=2
(3)(—1 1/4)--(+6 1/3)--2.75+10/3
=-4-3
=-7
(4) (-7 5/6) -7 1/6
=-15
(1)(-180)十10
=-170
(2)(11/12--7/6+3/4--13/24)x(-48)
=(22/24-28/24+18/24-13/24)x(-48)
=(-1/24)x(-48)
=2
(3)(—1 1/4)--(+6 1/3)--2.75+10/3
=-4-3
=-7
(4) (-7 5/6) -7 1/6
=-15