Question

Liczby dodatnie i ujemne: Oblicz: a) -3,82+7,5=
b)0,417-12,03=
c) -3i1/4-4i1/3=
d) 4i2/5+(-41/3)=
e) 4i2/5+(-2i3/20)=
f) -1i5/6-(-1i3/8)=
g) -5,2+31i1/4=
h) -12i2/3+2,6=
i) 8,25-10i3/8=
j) -2,25-5i5/6=
k) -0,12-(-3/4)=
l) -3,35+1,1-5i1/4=
m) 2i2/3-5,1-3,1=
n)-13i3/4+9,27+3,02=
o) -7i3/5-6i1/2+5,4=

Answer 1

a) -3,82 +7,5 = 3,68

b) 0,417 -12,03 = - 11,613

c) - 3i1/4 - 4i1/3 = -3i3/12 - 4i4/12 = -7 i 7/12

d) 4i2/5 + (-4 i1/3) = 4i6/15 -4 i5/15 = 1/15

e) 4i2/5 +(-2i3/20) = 4i8/20 -2i3/20= 2 i 5/20 = 2 i 1/4

f) -1i5/6 -(-1i3/8) = -1i20/24 +1i9/24 = - 11/24

g) -5,2+ 31 i1/4 = -5,2 +31,25 = 26,05

h) -12i2/3 + 2,6 = -12i2/3+2i6/10= -12i20/30+2i18/30 = - 10 i2/30= -10i1/15

i) 8,25 - 10 i3/8 = 8,25 - 10,375 = - 2,125

j) -2,25 - 5i5/6 = -2 i25/100 - 5i5/6= -2i 75/300 - 5 250/300 = - 7 i 325/300 =

      = - 8 i 25/300 = - 8 i 1/12

k) -0,12 -(-3/4) = -0,12 + 0,75 = 0,63

l) -3,35 + 1,1 - 5i1/4 = -3,35 +1,1 - 5,25 = - 7,5

m) 2i2/3 -5,1- 3,1 =2i2/3- 8,2= 2i2/3-8i2/10 = 2i20/30 -8i6/30 =-5 i16/30

n) - 13i3/4 + 9,27 +3,02 = -13,75+9,27+3,02 = - 1,46

o) -7i3/5 - 6i1/2 +5,4 = -7,6 -6,5 +5,4 = - 8 ,7