Question

срочно, помогите мне пожалуйста решить все задания,буду очень благодарна вам ​

Answer 1

$(-\frac{2}{7})*\frac{5}{8} = -\frac{5}{28}$

$3\frac{3}{7}*(-7) = \frac{24}{7} *(-7)=-24$

$-3\frac{2}{9}*9= -\frac{29}{9} *9=-29$

$5*1\frac{3}{5} = 5*\frac{8}{5} = 8$

$(26,2-30,5):\frac{1}{2} = (26\frac{2}{10}-30\frac{5}{10} )*2=-4\frac{3}{10} *2=-\frac{43}{10}*2=-\frac{43}{5}=8\frac{3}{5} = 8,6$

$2,6+3,4:1\frac{1}{16} = 2\frac{6}{10} + 3\frac{4}{10} *\frac{16}{17} =\frac{26}{10}+\frac{34}{10} *\frac{16}{17} = \frac{26}{10} +\frac{2*16}{10} =\frac{26}{10}+\frac{32}{10} =\frac{26+32}{10} = \frac{58}{10} = 5\frac{8}{10} =5,8$

$2\frac{2}{11} *\frac{7}{8} - 6:0,2=\frac{24}{11}*\frac{7}{8}-6:\frac{2}{10} =\frac{21}{11}-6:\frac{1}{5} =\frac{21}{11} - 6*5=\frac{21}{11}-30 =-28\frac{1}{11}$

$4\frac{2}{7} *1,75-3,36=\frac{30}{7} *\frac{175}{100} - 3,36=\frac{30}{7}*\frac{7}{4} - \frac{336}{100}=\frac{30}{4}-\frac{84}{25} =4\frac{7}{50} = 4,14$

$(-18\frac{3}{5}-20,1):(-0,3)= (-\frac{93}{5}-\frac{201}{10} ):(-\frac{3}{10})=-\frac{387}{10}:(-\frac{3}{10})=\frac{387}{10} *\frac{10}{3} = \frac{387}{3} = 129$

$-3\frac{6}{7}*3,6-3,4*3\frac{6}{7} =-\frac{27}{7} *\frac{18}{5} -\frac{17}{5}*\frac{27}{7} =-\frac{486}{35}-\frac{459}{35} = -27$