a.1,09+7,2:1 1/5=1,09+6=7,09
b.0,5*0,5+1/5*1 1/5=0,25+0,24=0,49
c.(3,8-2,9)*(3/8+0,125)=0,9*0,5=0,45
d.(8 1/3-8,1)*(9-4 5/7)=0,(9)
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a.1,09+7,2:1 1/5=1,09+6=7,09
b.0,5*0,5+1/5*1 1/5=0,25+0,24=0,49
c.(3,8-2,9)*(3/8+0,125)=0,9*0,5=0,45
d.(8 1/3-8,1)*(9-4 5/7)=0,(9)