oblicz:
A)2,2+12/7+(-1,2)+9-1 5/7) =
B)6 1/2 + (-3,25)+(-1 34)+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)=
skazuwka:6/9 to sześć dziewiąte
daie nailepszoł!!!!!!!!!!!!!!!!!!!!!
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A) 2,2+12/7+(-1/2)+9-1 5/7= 2 i2/10+12/7+(-1 i 2/10)+9-1 i 5/7=2 i 14/70+120/70+(-1 i 14/70)+9-1 i 50/70=2 i 134/70-1 i 14/70+9-1 i 50/70=9i70/70= 10
B) 6 i 1/2+(-3,25)+(-1,34)+1=6,5-3,25-1,34+1=2,91
C) -3,9+5/8+(-0,1)+0,375=-3,9+0,625-0,1+0,375= -3
D) -(-(-3)+(-2))+(-(-3))=-3-2+3=-2
E) -15+(-4-(-7))-(8)+(-11)=-15-+3-8-11= -31
f) 28-39+(-14)-(-12)-81=28-39-14+12-81=-134+40=-94
G) 37+(-18)-(-(-48))+(-9)=37-18-48-9=37-75=-38