Ćw. 13
4 - 6= -2
4 - 55= -51
-2 - 1= -3
-2 - 8 = -10
[tex]1 \frac{1}{2 } - 3 =-1,5\\-2 \frac{1}{2} - 4= -6,5[/tex]
Ćw.14
7-3 = 7 + (-3)
-2-3 = (-2)+(-3)
8-11 [tex]\neq[/tex] -8+11
-5-4 = (-5)+(-4)
Ćw.15
25 - 35 =25+ (-35) = -10
-29-10=-29+(-10)= -39
[tex]3 \frac{1}{2} -7= 3\frac{1}{2} +(-7)=-3,5[/tex]
-5,25 - 9 = -5,25+ (-9) = -14,25
Ćw. 16
-15-(-35)=-15+35= 20
-4-(-2)=-4+2=-2
-111-(-523)= -111+ 523=412
4,3-(-6)=4,3+6=10,3
Ćw.17
17-10=7
17-(-10)= 27
-17-10=-27
-17-(-10)=-7
B
-13-15=-28
-13-(-15)=2
13-15=-2
13-(-15)= 28
C
3,75-4=-0,25
3,75-(-4)=7,75
-3,75-4=-7,75
-3,75-(-4)=0,25
Ćw.18
-55-33=-88
65-56=9
-9-(-64)=55
-111-333=-444
89-(-211)=300
-7,5-(-5)=-2,5
