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=((43/12-47/18)*1 5/11-3/52*(2 1/2+5/6))*1 7/13=(35/36*16/11-3/52*(2 1/2+5/6))*1 7/13=
=(140/99-3/52*(5/2+5/6))*1 7/13=(140/99-3/52*10/3)*1 7/13=(140/99-5/26)*1 7/13=
=3145/2574*20/13=31450/16731=1 14719/16731
b) 19\84 : (5 i 13\42 - 2 i 13\28 + 5\24 ) + 1 i 2\27 - 1\3 * 4\9 =
=19/84:(223/42-69/28+5/24)+1 2/27-1/3*4/9=19/84:(239/84+5/24)+1 2/27-1/3*4/9=
=19/84:171/56+1 2/27-1/3*4/9=2/27+29/27-1/3*4/9=31/27-4/27=1
=((43/12-47/18)*1 5/11-3/52*(2 1/2+5/6))*1 7/13=(35/36*16/11-3/52*(2 1/2+5/6))*1 7/13=
=(140/99-3/52*(5/2+5/6))*1 7/13=(140/99-3/52*10/3)*1 7/13=(140/99-5/26)*1 7/13=
=3145/2574*20/13=31450/16731=1 14719/16731
b) 19\84 : (5 i 13\42 - 2 i 13\28 + 5\24 ) + 1 i 2\27 - 1\3 * 4\9 =
=19/84:(223/42-69/28+5/24)+1 2/27-1/3*4/9=19/84:(239/84+5/24)+1 2/27-1/3*4/9=
=19/84:171/56+1 2/27-1/3*4/9=2/27+29/27-1/3*4/9=31/27-4/27=1