Question

calcule a soma algébrica

Answer 1

A=(-7)+(-5)-(+3)
-7-5-3
-12-3
-15

B=(+30)-(-23)+(-7)+(-13)
+30+23-7-13
+53-7-13
-46-13
+33
C=(-37)+(-50)-(-13)-(-28)+5
-37-50+13+28+5
-87+13+28+5
-74+28+5
-46+5
-41

D=(+10)-(-8)-(-7)+(+6)-1
+10+8+7+6-1
+18+7+6-1
+25+6-1
+31-1
+30

E=-3+5-6+4-5+9
+2-6+4-5+9
-4+4-5+9
0-5+9
-5+9
+4

F=0-15+6-12+20-15+30
-15+6-12+20-15+30
-9-12+20-15+30
-21+30-15+30
+9-15+30
-6+30
+24