Question

oblicz a)1i2/5+1/4b)5i3/5+1i3/4c)4i2/3-2i2/7d)8i1/10-6i3/5e)18razy5i2/3f)2i1/3razy1i2/7g)4i1/6:15h)4i2/7:3i1/8 Oblicz-3+1i1/5razy3/4zad.b(2i5/6-1i1/3)razy2i14-1/6

Answer 1

a) 1i2/5 + 1/4= 1i8/20+5/20= 1 i13/20

b) 5i3/5+ 1i3/4= 5i12/20+1i15/20= 6 i 27/20= 7 i7/20

c) 4i2/3- 2i2/7 = 4i14/21 - 2i 6/21 = 2 i 8/21

d) 8i1/10- 6i3/5 = 8i1/10 - 6 i 6/10= 7i11/10 - 6i6/10 = 1 i 5/10= 1 i 1/2

e) 18 * 5i2/3= 18 * 17/3 = 6 * 17/1 = 102/1 = 102

f) 2 i 1/3 * 1i2/7 = 7/3 * 9/7 = 1/3 * 9/1 = 9/3 = 3

g) 4i1/6 : 15= 25/6 :15/1= 25/6 * 1/15 = 5/6 * 1/3 = 5/18

h) 4i2/7 : 3i1/8= 30/7:25/8= 30/7 * 8/25= 6/7 * 8/5 = 48/35 = 1 i 13/35

 

3+ 1i1/5*3/4 = 3 + 6/5 *3/4 = 3 + 3/5*3/2= 3 + 9/10 = 3 i9/10

b) (2i5/6 - 1 i1/3)*2i1/4 -1/6= (2i5/6-1i2/6)*9/4 - 1/6= 1 i3/6* 9/4- 1/6=

    = 9/6*9/4 - 1/6 = 9/2* 3/4 - 1/6 = 27/8 - 1/6 = 81/24 - 4/24=77/24=3i 5/24

Answer 2

a)1i2/5+1/4=7/5+1/4=28/20+5/20=33/20=1i13/20

b)5i3/5+1i3/4=28/5+7/4=112/20+35/20=147/20=7i7/20

c)4i2/3-2i2/7=14/3-16/7=98/21-48/21=50/21=2i8/21

d)8i1/10-6i3/581/10-33/5=81/10-66/10=15/10=1i1/2

e)18razy5i2/3=18x17/3=6x17/1=102

f)2i1/3razy1i2/7=7/3x9/7=1/1x3/1=3

g)4i1/6:15=25/6x1/15=5/6x1/3=5/18

h)4i2/7:3i1/8=30/7:24/8=30/7x8/24=5/7x8/4=40/28=1i3/7

Oblicz-3+1i1/5razy3/4=-3+6/5x3/4=-3+18/20=-60/20+18/20=-42/20=-21/10=-2i1/10

b(2i5/6-1i1/3)razy2i14-1/6=(17/6-4/3)x2i1/4-1/6=(17/6-8/6)x2i1/4-1/6=9/6x2i1/4-1/6=9/6x9/4-1/6=9/2x3/4-1/6=27/8-1/6=142/48-8/48=134/48=2i19/24