Oblicz; 12x5/6, 2x4/5, 4x11/18, 25x2/15-  zad.2;oblicz pamiętając o skracaniu:8x5/12, 10x8/15, 3/4x56, 5/42x28, zad.3 0blicz;2x11/18x6, 3x12/99x11, 4x5/6x5, 12x11/8x2 Plis...  

12x5/6=60/6=10 2x4/5=8/5=1 3/5 4x11/18=44/18=22/9=2 4/9 25x2/15=50/15=10/3=3 1/3 2. 8x5/12=10/3=3 1/3 10x8/15=16/3=5 1/3 3/4x56=3x14=42 5/42x28=5/3x2=20/3= 6 2/3 3. 2x11/18x6=22/108=11/54 3x12/11x99=36/1089=4/121 4x5/6x5=20/30=20/30=2/3 12x11/8x2=132/16=33/4=8 1/4

10,8/5,22/9,50/15.zad2 10/3=3 i 1/3,16/3=5 i 1/3,42/1=42,10/3=3 i 1/3 zad 3 11/52,16/209,20/30=2/3,132/16=8 i 1/4