Ответ:
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[tex]\displaystyle\frac{13}{25} *30=\frac{13*30}{25} =\frac{390}{25} =\frac{78*5}{5*5} =\frac{78}{5} =\frac{15*3+3}{5} =\frac{15*5+3}{5} =15\frac{3}{5}[/tex]
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Ответ:
[tex]\displaystyle\frac{13}{25} *30=\frac{13*30}{25} =\frac{390}{25} =\frac{78*5}{5*5} =\frac{78}{5} =\frac{15*3+3}{5} =\frac{15*5+3}{5} =15\frac{3}{5}[/tex]