Odpowiedzi

2010-03-10T13:03:37+01:00
A)1 i 1/4 + 3 i 4/5 = 5/4+19/5=25/20+76/20=101/20=5 i1/20
b)13 i 1/2 + 3 i 7/15=27/2+52/15=405/30+104/30=509/30=16i29/30
c)2 i 5/6 + 1 i 1/2=17/6+3/2=17/6+3/6=20/6=3 2/3
d)8 i 2/9 + 2 i 5/6=74/9+17/6=148/18+51/18=199/18=11i1/18
e)4 i 2/3 - 1 i 5/6=14/3-11/6=28/6-11/6=17/6=2i5/6
f)3 i 3/4 - 1 i 2/3=15/4-5/6=45/12-10/12=35/12=2i11/12
g)3 i 5/9 - 1 i 8/15=32/9-23/15=160/45-69/45=91/45=2i1/45
h)8 i 3/18 - 2 i 5/9=147/18-23/9=147/18-46/18=101-18=5i11/18
2010-03-10T13:06:24+01:00
A)1 ¼ + 3 ⅘ = 1⁵/₂₀+3¹⁶/₂₀=4²¹/₂₀=4¹/₂₀
b)13 ½ + 3 ⁷/₁₅=13¹⁵/₃₀+3¹⁴/₃₀=16²⁹/₃₀
c)2 ⅚ + 1 ½= 2 ⅚+1³/₆=3⁸/₆=4²/₆=4⅓
d)8 ²/₉ + 2 ⅚= = 8⁴/₁₈+2¹⁵/₁₈=10¹⁹/₁₈=10¹/₁₈
e)4 ⅔ - 1 ⅚= 4⁴/₆-1 ⅚=3⅚
f)3 ¾ - 1 ⅔= 3⁹/₁₂-1⁸/₁₂=2¹/₁₂
g)3 ⁵/₉ - 1 ⁸/₁₅= 3²⁵/₄₅-1²⁴/₄₅=2¹/₄₅
h)8 ³/₁₈ - 2 ⁵/₉= 8 ³/₁₈ - 2¹⁰/₁₈=5⁷/₁₈
2010-03-10T13:08:16+01:00
A) = 5/4 + 19/5= 25/20 + 76/20 = 101/20= 5 i 5/10= 5 i 1/2
b) = 27/2 + 52/15 = 405/30 + 104/30 = 509/30 = 16 i 29/30
c) = 17/6 + 3/2 = 17/6 + 9/6 = 26/6 = 4 i 2/6 = 4 i 1/3
d) = 8 i 2/9 + 2 i 5/6 = 74/9 + 17/6 = 444/54 + 153/54 = 597/54 = 11 i 3/54
e) = 4 i 2/3 - 1 i 5/6 = 14/3 - 11/6 = 28/6 - 11/6 = 17/6 = 2 i 5/6
f) = 3 i 3/4 - 1 i 2/3 = 15/4 - 5/2 = 15/4 - 10/4 = 5/4 = 1 i 1/4
g) = 3 i 5/9 - 1 i 8/15 = 22/9 - 23/15 = 330/135 - 207/135 = 123/135
h) = 8 i 3/18 - 2 i 5/9 = 147/18 - 23/9 = 147/18 - 46/18 = 101/18= 5 i 11/18

Tylko nie jestem pewna czy na pewno o to Ci chodziło, ale mam nadzieję że tak ;)