Question

Вычислите в) с) Помогите решuть

Answer 1

Пошаговое объяснение:

b)

$\frac{(9\frac{1}{4}-7\frac{2}{5} )*2,5-1\frac{1}{2} }{(3\frac{1}{8}+4.15-1\frac{5}{48}-5\frac{2}{5}):3\frac{1}{12} } +\frac{6-4*0,1}{7+1:\frac{3}{7} } =\frac{(9,25-7,4)*2,5-1,5}{(3,125+4,15-\frac{53}{48}-5,4):\frac{37}{12} }+\frac{6-0,4}{7+\frac{7}{3} } =$

$=\frac{1,85*2,5-1,5}{(1.875-\frac{53}{48}):\frac{37}{12} } +\frac{5,6}{7+2\frac{1}{3} }=\frac{4,625-1,5}{(1\frac{7}{8}-\frac{53}{48}):\frac{37}{12} } +\frac{5\frac{3}{5} }{9\frac{1}{3} }=\frac{3,125}{(\frac{15}{8}-\frac{53}{48})*\frac{12}{37} } +\frac{\frac{28}{5} }{\frac{28}{3} } =\\=\frac{3\frac{1}{8} }{\frac{15*6-53}{48} *\frac{12}{37} } +\frac{3}{5} =\frac{\frac{25}{8} }{\frac{90-53}{48}*\frac{12}{37} }+\frac{3}{5}=\frac{\frac{25}{8} }{\frac{37}{48}*\frac{12}{37} } +\frac{3}{5} =$

$=\frac{\frac{25}{8} }{\frac{2}{8} } +\frac{3}{5} =\frac{25}{2}+\frac{3}{5} =11,5+0,6=12,1.$

c)

$52:[\frac{6:(0,4-0,2)}{2,5*(0,8+1,2)}+\frac{(34,06-33,81)*4}{6,84:(28,57-25,15)} ]-8=52:(\frac{6:0,2}{2,5*2} +\frac{0,25*4}{6,84:3,42})-8=\\=52:(\frac{1,2}{5} +\frac{1}{2})=52:(\frac{1\frac{1}{5} }{5} +\frac{1}{2} )=52:(\frac{\frac{6}{5} }{5}+\frac{1}{2} )=52:6\frac{1}{2} =52:\frac{13}{2}=\frac{52*2}{13}=8.$