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15 1/2 : 62/7 + 0,75 = (31/2)*(7/62)+0,75= (7/4)+(3/4)= 10/4= 2,5
0,5:1/3+1,7 = (1/2)*3+1,7= 1,5+1,7=3,2
9/4 * (1-0,2) = (9/4)*0,8= 2,25*0,8= 1,8
Liczę na naj :)
15 1/2 : 62/7 + 0,75 = 31/2*7/62+0,75=1,75+0,75=2,5
0,5:1/3+1,7 = 0,5:1/3+1,7=0,5*3+1,7=1,5+1,7=3,2
9/4 * (1-0,2)= 9/4*(1-0,2)=2,25*0,8=1,8