-9+(-13)=22
-3,6+(-1,5)=1,5
1) -22 2) -4.1 3) -12/16 4) -55/63
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-9+(-13)=22
-3,6+(-1,5)=1,5
1) -22 2) -4.1 3) -12/16 4) -55/63