Question

3 7/15×0,25+5/6-1 2/5
5.4 : (3/20+0,75)
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Answer 1

Ответ:

Пошаговое объяснение:

$1)3\frac{7}{15} *0,25=\frac{52}{15} *\frac{25}{100} =\frac{65}{75} \\2)\frac{65}{75} +\frac{5}{6} =\frac{130}{150} +\frac{125}{150} =\frac{255}{150} \\3)\frac{255}{150} -1\frac{2}{5} =\frac{255}{150} -\frac{7}{5} =\frac{255}{150} -\frac{210}{150} =\frac{45}{150} =\frac{3}{10} =0,3$

$1)\frac{3}{20} +0,75=\frac{3}{20} +\frac{75}{100} =\frac{15}{100} +\frac{75}{100} =\frac{90}{100} \\2)5,4:\frac{90}{100} =\frac{54}{10} *\frac{100}{90} = \frac{90}{15} =6$