Wykonaj obliczenia. Postaraj się to zrobić w najprostszy sposób.
a) 8 i 1/7 + 7 i 8/9 + 2 i 1/9=
b) 4 i 5/6 + 9 i 5/8 + 7 i 3/18=
c) 11 i 5/8 - 5 i 35/56 - 3 i 5/9=
d) 6 i 2/12 - 4 i 1/4 + 5 i 5/6=
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a) 8 i 1/7 + 7 i 8/9 + 2 i 1/9= 8 i 9/63 + 7 i 56/63 + 2 i 7/63= 17 72/63= 17 i 9/63=
17 i 1/7
b) 4 i 5/6 + 9 i 5/8 + 7 i 3/18= 4 i 15/18 + 7 i 3/18 + 9 i 5/8= 12 + 9 i 5/8= 21 5/8
c) 11 i 5/8 - 5 i 35/56 - 3 i 5/9= 11 i 35/56 - 5 i 35/56 - 3 i 5/9= 6 - 3 i 5/9= 2 i 4/9
d) 6 i 2/12 - 4 i 1/4 + 5 i 5/6= 6 i 2/12 - 4 i 3/12 + 5 i 10/12= 1 11/12 + 5 i 10/12=
6 i 21/12= 7 i 9/12= 7 i 3/4
a) 57/7+71/9+19/9= 513/63+497/63+133/63= 1143/63= 18 9/63
b) 29/6+77/8+129/18= 232/48+462/48+129/18= 694/48+129/18= 11242/864+6192/864= 20 i 154/864= 20 77/432
c) 93/8-315/56-32/9= 651/56-315/56-32/9= 336/56-32/9= 3024/504-1794/5-4= 1232/504= 2 28/63
d) 74/12-17/4+35/6= 144/24-102/24+140/24= 42/24+140/24= 182/24= 7 7/12