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5+10
15
(-6)+(-8)
-6-8
-14
(-15)+(+23)
-15+23
+8
(-14)+(+21)
-14+21
+7
(-35)+(+25)
-35+25
-10
(-22)+(-8)
-22-8
-30
-6+8=2
-15+23=8
-14+21=7
-35+25=-10
-22+8=-14