Oblicz liczby wymiernw;
A)2,2+12/7+(-1,2)+(-1 5/7)=
B)6 1/2+(-3,25)+(-1 3/4)+1=
C)-3,9 +5/8+(-0,1)+0,375=
D)-(-(-3)+(-2))+(-(-3))=
E)-15+(-4-(-7))-(-8)+(-11)=
F)28 - 39+(-14)-(-12)-81= G)37+(-18)-(-(-48))+(-9)=
Daje naj;)
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a) 2,2 + 12
7 + (- 1,2) + (-15
7) = 2 1 + 1 5 - 1 1 - 2 1 = 2 7 + 1 25 - 1 7 - 2 5 =
5 7 5 7 35 35 35 35
3 32 - 1 7 - 2 5 = 2 25 - 2 5 = 1 20 = 1 4
35 35 35 35 35 35 7
b) 6 1 + (-3,25) + (- 1 3 ) + 1 = 6,5 - 3,25 - 1,75+ 1 = 2,5
2 4
c) -3,9 + 5 + (- 0,1) + 0, 375 = -3,9 + 0,625 - 0,1+ 0, 375 = - 3
8
d) -(-(-3)+(-2))+(-(-3)) = -3- 2 +3 = -5 + 3 = - 2
e) -15+(-4 -(-7))- (-8)+(-11) = -15 - 4 +7 + 8 - 11 = -19+7+8-11 = -12+8-11= - 4-11= -14
f) 28-39+(-14)-(-12)-81= 28-39-14+12-81= -94
g) 37+(-18)-(-(-48))+(-9)= 37-18-48-9= -38
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