Zad 13.
a)
15 - 35 = 15 + (-35) = -20
-37 - 10 = -37 + (-10) = -47
b)
4 1/2 - 8 = 9/2 - 8 = -7/2
-7,25 - 9 = -7,25 + (-9) = -16,25
Zad 14.
a) -15 - (-25) = -15 +25 = 10
b) -6 -(-2)= -6 + 2 = -4
c) -110 -(-656) = -110 + 656 = 546
d) 4,1- (-6) = 4,1 + 6 = 10,1
e) -5 -(-9,3) = -5 + 9,3 = 4,3
Zad 15.
a)
18-10=8
18-(-10)=28
-18-10= -28
-18-(-10) = -8
b)
-14-12= -26
-14-(-12) = -2
14-12= 2
14- (-12)= 26
c)
2,75 - 5= -2,25
2,75-(-5) = 7,75
-2,75 - 5= -7,75
-2,75-(-5)= 2,25
Zad 16.
a) -77-22= -99
85-58 = 27
b) -9-(-73) = 64
-222-444= -666
c) 59-(-441)= 500
-8,5-(-3)= -5,5
Zad 17.
a)
3-(-5) = 8
-5-(-8)=3
b)
-8-2=-10
0-(-9)= 9
c)
-14-(-7)=-8
-7-(-7)=0
Zad 18.
a) -1-(-1,99999) = (0,99999)
b) 10000-(-9999)= 19999
c) -1 - 99,9999 = -100,9999
d) 999,999 - 1000 = -0,001
licze na naj
