Question

Prosze niech mi to ktoś obliczy.

a.19 - 3/4 * 6i2/7 f.2i1/2 +3 * (6,2 + 4,8)

b.5/6 * (1i3/4 + 2i1/2) g.5i3/4 * 1/23 - 2i2/7 * 1/16

c.3,5 * 1/5 +2/7 * 0,84 h.24,75 : 3/4 +5i1/2 : 2i3/4

d.(4i1/3 - 2i1/6) : 1i5/8 i.70 : (8i1/5 - 7,8) - 0,05

e.6,4 : 2i2/15 - 24,8 : 4/5

Oblicz sprytnie.

a.67 + 5i1/7 + 33 + 4i6/7

b.128,4 + (-33i1/3) + 71,6

c.4i2/9 + (-10) + 5i1/3 + (-6) + 6i4/9

d.2,3 * 2/5 * 1/23 * 2,5

e.125 * (-3,7824) * (-8)

f.6/7 * 4/5 * 2/3 * 1 * 3/2 * 5/4 * 7/6

Answer 1

a)
19 - 3/4 * 6 i 2/7 =
= 19 - 3/4 * 44/7 =
= 19 - 33/7 =
= 19 - 4 i 5/7 =
= 14 i 2/7
=============================

b)
5/6 : (1 i 3/4 + 2 i 1/2) =

= 5/6 : (7/4 + 5/2)  =
= 5/6 : (7/4 + 10/4) =
= 5/6 : 17/4 =
= 5/6 * 4/17 =
= 10/51

==========================
c) 3,5*1/5+2/7*0,84=
= 3,5 * 0,2 + 2/7 * 84/100 =
= 0,7 + 12/50 =
= 0,7 + 0,24 =
= 0,94

==========================
d) (4i1/3-2i1/6):1i5/8=
= (13/3 - 13/6) : 13/8 =
= (26/6 - 13/6) : 13/8 =
= 13/6 * 8/13 =
= 4/3 =
= 1 i 1/3

==========================
e) 6,4:2i2/15-24,8:4/5=
= 64/10 : 32/15 - 24,8 : 0,8 =
= 64/10 * 15/32 - 31 =
= 6/2 - 31 =
= 3 - 31 =
= -28
=============================

f) 2i1/2+3*(6,2+4,8)=
= 2,5 + 3 * 11 =
= 2,5 + 33 =
= 35,5

=========================
g) 5i3/4*1/23-2i2/7*1/16=

23/4 * 1/23 - 16/7 * 1/16 =
= 1/4 - 1/7 =
= 7/28 - 4/28 =

= 3/28
=========================
h) 24,75:3/4+5i1/2:2i3/4=

= 24,75 : 0,75 + 5,5 : 2,75 =
= 33 + 2 =
= 35
=========================
i)70:(8i1/5-7,8-0,05)=
= 70 : (8,2 - 7,8 - 0,05) =
= 70 : (0,4 - 0,05) =
= 70 : 0,35 =
= 200

 

2)

a.67 + 5i1/7 + 33 + 4i6/7=67+33+5i1/7+4i6/7=100+10=110

b.128,4 + (-33i1/3) + 71,6=128,4+71,6-33i1/3=200-33i1/3=176i2/3

c.4i2/9 + (-10) + 5i1/3 + (-6) + 6i4/9=4i2/9+5i3/9+6i4/9-16=16-16=0

d.2,3 * 2/5 * 1/23 * 2,5=2i3/10*2/5*1/23*2i5/10=46/50*25/230=1150/1150=1

e.125 * (-3,7824) * (-8)=125*8*(-3,7824)=1000*(-3,7824)=-37824

f.6/7 * 4/5 * 2/3 * 1 * 3/2 * 5/4 * 7/6=6/7*7/6*4/5*5/4*2/3*3/2*1=1*1*1*1=1