Oblicz.
a) 2 i 2/3- 5,1-3,1=
b) -13 i 3/4+9,27+ 3,02=
c) -7 i 3/5-6 i 1/2+3,02=
d) 4 i 1/2-2,3-3,2=
e) 5 i 3/7-11,4+5 i 4,7=
f) -7,23+14 i 1/4+(-8,02)=
g) -3,42+2 i 3/5-1,18=
h) -42,7+(-13,6)+12,7=
i) -3,72-2,69+0,69=
j) 7,25-10 i 5/7-2 i 1/4=
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a) 2 i 2/3- 5,1-3,1= 8/3 - 8,2 = 8/3 - 82/10 = 8/3 - 41/5 = 40/15 - 123/15 = -83/15 = -5 8/15
b) -13 i 3/4+9,27+ 3,02= -13,75 + 9,27 + 3,02 = -1,46
c) -7 i 3/5-6 i 1/2+3,02= -7,6 - 6,5 + 3,02 = -14,1 + 3,02 = -11,08
d) 4 i 1/2-2,3-3,2= 4,5 - 2,3 - 3,2 = 2,2 - 3,2 = -1
e) 5 i 3/7-11,4+5 i 4/7= 38/7 + 39/7 - 11,4 = 77/7 - 11,4 = 11 - 11,4 = -0,4
f) -7,23+14 i 1/4+(-8,02)= -7,23 + 14,25 - 8,02 = 7,02 - 8,02 = -1
g) -3,42+2 i 3/5-1,18= -3,42 + 2,6 - 1,18 = -0,82 - 1,18 = -2
h) -42,7+(-13,6)+12,7= -42,7 - 13,6 + 12,7 = -56,3 + 12,7 = -43,6
i) -3,72-2,69+0,69= -6,41 + 0,69 = -5,72
j) 7,25-10 i 5/7-2 i 1/4= 7,25 - 2,25 - 10 5/7 = 5 - 75/7 = 35/7 - 75/7 = -40/7 = -5 5/7