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1. 4:⁶₋₇= 4/1:6/7=4/1*7/6=14/3=4 2/3
2. 10:⁵₋₈= 10/1: 5/8 =5/1*4/5=4
3. 1:¹₋₅= 5
4. ¹⁵₋₁₆:⁹₋₂₈= 15/16*28/9=35/12=2 11/12
5. ¹⁵₋₁₆:²⁷₋₃₂=15/16*32/27=10/9= 1 1/9
6. 1¹₋₁₅:¹²₋₂₅=16/15*25/12=18/9=2
7. 2²₋₉:⁸₋₂₁=20/9*21/8=35/6=5 5/6
8. 6:4= 1.5
9. ⁴₋₅:2=4/5*1/2=2/5
10. 1³₋₅:3=8/5*1/3=8/15
MNOŻENIE.!
1.8 × 4½=8/1*9/2=72/2=36
2.3⁵₋₉ × 9= 32
3.15 ×¹⁹₋₂₀= 57/4=14 1/4
4.¹⁵₋₁₆ × ⁸₋₂₅=3/10
5.⁴₋₉ ×¹⁵₋₁₆=5/9
6.2¹₋₁₀ × ²⁵₋₂₈=21/10*25/28=105/56=1 49/56
7.3¹₋₉ × 3³₋₇=28/9*24/7=32
8.⅔ liczby 12 to,
12* 2/5= 4 4/5
9.⁷₋₁₀ liczby 14,to
14/1*7/10=49/5=9 4/5
10.⁷₋₁₂ liczby 28 to,
7/12*28=49/3=15 2/3