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A. (+4)+(-6)+(-8)+(+10)+(+2)
+4-6-8+10+2
+4+10+2-6-8
+16-14
+2
B. (+8)+(-60)+(+16)+(+5)+(-4)
+8-60+16+5-4
+8+16+5-60-4
+29-64
-35
C. (-10)+(-8)+(+1)+(-6)+(-30)
-10-8+1-6-30
+1-18-36
-17-36
-55
D. (-10)+(+2)+(-5)+(+6)+(-8)
-10+2-5+6-8
+2+6-10-5-8
+8-15-8
-15
E.(+7)+(-2)+(+9)+(+3)+(-2)
+7-2+9+3-2
+7+9+3-4
+16-1
+15
Espero te haya servido, saludos!