Oblicz pamiętając o skracaniu :
6 · ⁴/₁₅ = ⁶ · ⁴ / ₁₅
10 · ₇/₁₂ =
9 · ⁵/₂₁ =
⁵/₁₈ · 12 =
⁸/₂₁ · 9 =
Oblicz:
3 · 1 ²/₅
2 · 8 ¹/₃
2⁷/₈ · 3
Oblicz
⁵/₆ liczby 13
1³/₄ liczby 20
Oblicz:
³/₅ : 4
2⁵/₇ : 6
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6 · ⁴/₁₅ = 6/1 * 4/15=2* 4/5= 8/5=1 1/3
10 · ₇/₁₂ =10/1* 7/12=5*7/6=30/6=5
9 · ⁵/₂₁ =9/1* 5/21=3* 5/7 =15/7=2 1/7
⁵/₁₈ · 12 =5/18* 12/1= 5/3*2=10/3= 3 1/3
⁸/₂₁ · 9 = 8/21* 9/1=8/7*3=24/7=3 3/7
3 · 1 ²/₅= 3* 7/5= 21/5= 4 1/5
2 · 8 ¹/₃= 2* 24/3= 48/3= 16
2⁷/₈ · 3=23/8*3=69/8=8 5/8
5/6* 13= 65/6=10 5/6
1 3/4*20= 7/4*20= 140/4=35
3/5:4= 3/5*1/4=3/20
2 5/7 :6= 19/7 *1/6=19/42