Explicație pas cu pas:
a) 0,3*[tex]\frac{28}{9}[/tex]:[tex]\frac{14}{30} }[/tex]
[tex]\frac{3}{10}[/tex]*[tex]\frac{28}{9}[/tex]*[tex]\frac{30}{14}[/tex]
[tex]\frac{2}{3}[/tex]*3=2
b)[tex]\frac{7}{112}+\frac{1}{56}:0,25[/tex]
[tex]\frac{7}{112} +\frac{1}{56} :\frac{1}{4}[/tex]
[tex]\frac{7}{112} +\frac{1}{56} *4[/tex]
[tex]\frac{7}{112} +\frac{1}{14} =\frac{15}{112}[/tex]
c)[tex]\frac{4}{15} +0,35-\frac{1}{6}[/tex]
[tex]\frac{4}{15} +\frac{7}{20} -\frac{1}{6} =\frac{9}{20}[/tex]
d)[tex]0,2+0,4:\frac{1}{5} -\frac{1}{5}[/tex]
[tex]\frac{1}{5} +\frac{2}{5} *5-\frac{1}{5} \\\frac{1}{5} +2-\frac{1}{5}=2[/tex]
[tex]e)0,25:\frac{1}{4} *0,25+\frac{1}{4} \\\frac{1}{4} :\frac{1}{4} *\frac{1}{4} +\frac{1}{4}\\1*\frac{1}{4} +\frac{1}{4} \\\frac{1}{4}+\frac{1}{4}=\frac{1}{2}[/tex]
[tex]f)0,5:\frac{4}{3} +1,2\\\frac{1}{2} *\frac{3}{4}+\frac{6}{5} \\\frac{3}{8} +\frac{6}{5}=\frac{63}{40}[/tex]
[tex]g)\\\frac{5}{2} -\frac{1}{3}:\frac{1}{5} \\\frac{5}{2}-\frac{1}{3}*5\\\frac{5}{2}-\frac{5}{3}=\frac{5}{6}[/tex]
[tex]h)\\0,2-(\frac{1}{5})^{2} +1\\\frac{1}{5}-\frac{1}{25}+1=\frac{29}{25}[/tex]
