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b.)2,7
c.)3.75
OBLICZENIA:
a.) 3\5x4\10+6\10:2\3=3\5x2\5+3\5:2\3=6\25+3\5x3\2=6\25+9\10=24\100+90\100=114\100=1 14\100=1,14
b.)3\4x5 1\5-2 1\5:1 5\6=3\4x26\5-11\5:11\6=39\10-11\5x6\11=39\10-6\5=39\10-12\10=27\10=2 7\10=2,7
c.)1 1\4x(3,6-2\5)-0,25=1,25x(3,2)-0,25=4-0.25=3.75