Question

Salut. Ma puteti ajuta va rog cu acest exercitiu? Dau Coroana

Answer 1

Explicație pas cu pas:

a) 0,3*$\frac{28}{9}$:$\frac{14}{30} }$

$\frac{3}{10}$*$\frac{28}{9}$*$\frac{30}{14}$

$\frac{2}{3}$*3=2

b)$\frac{7}{112}+\frac{1}{56}:0,25$

$\frac{7}{112} +\frac{1}{56} :\frac{1}{4}$

$\frac{7}{112} +\frac{1}{56} *4$

$\frac{7}{112} +\frac{1}{14} =\frac{15}{112}$

c)$\frac{4}{15} +0,35-\frac{1}{6}$

$\frac{4}{15} +\frac{7}{20} -\frac{1}{6} =\frac{9}{20}$

d)$0,2+0,4:\frac{1}{5} -\frac{1}{5}$

$\frac{1}{5} +\frac{2}{5} *5-\frac{1}{5} \\\frac{1}{5} +2-\frac{1}{5}=2$

$e)0,25:\frac{1}{4} *0,25+\frac{1}{4} \\\frac{1}{4} :\frac{1}{4} *\frac{1}{4} +\frac{1}{4}\\1*\frac{1}{4} +\frac{1}{4} \\\frac{1}{4}+\frac{1}{4}=\frac{1}{2}$

$f)0,5:\frac{4}{3} +1,2\\\frac{1}{2} *\frac{3}{4}+\frac{6}{5} \\\frac{3}{8} +\frac{6}{5}=\frac{63}{40}$

$g)\\\frac{5}{2} -\frac{1}{3}:\frac{1}{5} \\\frac{5}{2}-\frac{1}{3}*5\\\frac{5}{2}-\frac{5}{3}=\frac{5}{6}$

$h)\\0,2-(\frac{1}{5})^{2} +1\\\frac{1}{5}-\frac{1}{25}+1=\frac{29}{25}$