4/5+1(2/3)+3/5+1/3=(4/5+3/5)+(1(2/3)+1/3)=? jak najkrócej pls
pls z wytłumaczeniem
=7/5+3=1(2/5)+3=3(2/5)
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=7/5+3=1(2/5)+3=3(2/5)