j) 8 3/8 x 4/7 x 3= 67/8*4/7*3=804/56=14 20/56=14 10/28=14 5/14
k) 2 1/7 x 7 x 2 2/5= 15/7*7*12/5=1260/35=36
l) 4 x 15x9/12=60*9/12=60*3/4=180/4=45
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j) 8 3/8 x 4/7 x 3= 67/8*4/7*3=804/56=14 20/56=14 10/28=14 5/14
k) 2 1/7 x 7 x 2 2/5= 15/7*7*12/5=1260/35=36
l) 4 x 15x9/12=60*9/12=60*3/4=180/4=45
licze na naj