Ex de mai jos va rog mult

Răspuns:
Explicație pas cu pas:
-3-9=-12
-3+12=9
-21+23=2
-2+5=3
-14+14=0
-42+5= -37
-4+6=2
12-3=9
-2-23= -25
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-
-
6-9=-3
7-15=-8
-3+17=14
-8+7= -1
-14+12= -2
-4+7=3
2+9=11
0-13 = -13
2-9= -7
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-
12-8=4
(-8)+8=0
-9+8= -1
-12+9= -3
13-15= -2
1+5=6
-21-7= -28
7-10= -3
7-10= -3
-
0-6= -6
15-14=1
11+1=12
-8+11=3
2-5= -3
0+6= 6
10+8=18
-4-9= -13
4-12= -8
Răspuns:
-3+(-9)=-12
-3+(+12)=9
-21+(+23)=2
-2+5=3
-14+14=0
-42-(-5)=-37
-4-(-6)=2
+12-(+3)=9
-2-23=-25
6+(-9)=-3
7+(-15)=-8
-3+17=14
-8+7=-1
-14+12=-2
-4-(-7)=3
+2-(-9)=11
0-(+13)=-13
2-(+9)=-7
12+(-8)=4
(-8)+8=0
-9+8=-1
-12+9=-3
13-15=-2
+1-(-5)=6
-21-(+7)=-28
7-10=-3
7-(+10)=-3
0+(-6)=-6
15+(-14)=1
+11+(+1)=12
-8+11=3
2-5=-3
0-(-6)=6
+10-(-8)=18
-4-9=-13
4-12=-8