( - 20,6 + 13,78 ) + ( 19,12 + ( - 12,3 ) )
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-6,82+19,12-12,3
Add -20,6 and 13,78 to get -6,82.
12,3-12,3
Add -6,82 and 19,12 to get 12,3.
0
Subtract 12,3 from 12,3 to get 0.
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