Question

927 928 помогите пж даю 30 баллов

Answer 1

$\displaystyle 927.\\\\1)..\frac{0,7}{2,2+1.3}=\frac{0,7}{3,5}=\frac{0,7*10}{3,5*10}=\frac{7}{35}=\frac{1}{5}=0,2\\\\\\2)..\frac{1,6}{10-3,6}=\frac{1,6*10}{6,4*10}=\frac{16}{64}=\frac{1}{4}=0,25\\\\\\3)..\frac{2,8+1,7}{3,5-2,6}=\frac{4,5*10}{0,9*10}=\frac{45}{9}=5\\\\\\4)..\frac{17,5-5,9}{4,7-1,8}=\frac{11,6*10}{2,9*10}=\frac{116}{29}=4\\\\\\5)..\frac{18,3-7,5}{1-0,64}=\frac{10,8*100}{0,36*100}=\frac{1080}{36}=30\\\\\\6)..\frac{14,2-4,7}{0,16+0,03}=\frac{9,5*100}{0,19*100}=\frac{950}{19}=50$


$\displaystyle 928. \\ \\ 1)..\frac{1,3*0,45*7,2}{1,5*1,2*0,65}= \frac{13*45*72*10000}{15*12*65*10000}= \frac{3*6}{5}=3,6 \\ \\ \\ 2). \frac{1,7*4,5*6,9*1,1}{0,23*6,8*0,9*5,5}= \frac{17*45*69*11*100000}{23*68*9*55*10000}= \frac{5*3*10}{4*5}=7,5 \\ \\ \\ 3).. \frac{0,25*3,6*0,76}{0,45*0,19*0,5}= \frac{25*36*76*100000}{45*19*5*100000}= \frac{5*4*4}{5}=16 \\ \\ \\ 4).. \frac{0,25*18,6*4,2*5,7}{1,9*1,26*3,1*0,5}= \frac{25*186*42*57*100000}{19*126*31*5*100000}= \\ \\ \\ = \frac{5*6*3}{3}=30$