Zad 1. Oblicz
a)(-1,7)+0,9=
b)18+(-20,7)=
c)(-2,7)=(-3,6)=
d)(-3,4)-(-1,5)=
e)1/4-1/2=
f)(-7/12)+3/8=
g)(-3 1/5)-2 1/2=
h)1 1/6-(-2 1/12)=
i)3,7-4 2/5=
j)(-7/8)=(-0,7)=
k)1,4-(-1 3/4)=
l)(-2 1/5)-(-1,6)=
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a) (-1,7)+0,9 =-0,6
b) 18+(-20,7)=-2,7
c) (-2,7)+(-3,6)=-6,3
d) (-3,4)-(-1,5)=-1.9
e) 1/4-1/2=0,25-0,5=-0,25
f) (-7/12)+3/8
g) (-3 1/5) -2 1/2=-3,2-2,5=5,7
h)1 1/6 -(2 1/12)
i) 3,7- 4 2/5=3,7-4,4=-0,7
j) (- 7/8) +(-0,7)
k) 1,4 -(-1 3/4)=1,4+1,75=3,15
l) (-2 1/5) -(1,6)=-2,2-1,6=-3,8