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Mam nadzieję że pomogłam i liczę na naj :)
b)10 i 1/2 - 4:7/8 +1=11 i 1/2 -4 *8/7= 23/2 -32/7 = 161/14 - 64/14 = 97/14 =6 i 13/14
c)2 i 3/4 * 7/9 : 3 i 1/2 +6 = 11/4 *7/9 : 7/2 +6 =11/4 * 7/9 * 2/7 +6 = 11/4 *2/9+6=
11/2 *1/9 +6 = 11/18 + 6 =6 i11/18