Question

Заранее решить по действиям 1) 2целых1/6: (8целых 5/12-9,5)+(23,25-9целых 1/8)×4

Answer 1

1)8 5/12-9,5=8 5/12-9 6/12=-1 1/12
2)2 1/6:(-1 1/12)=-(13*12)/(6*13)=-2
3)23,25-9 1/8=23,25-9,125=14,125
4)14,125*4=56,5
5)-2+56,5=54,5

Answer 2

$2\frac{1}{6} :(8 \frac{5}{12} -9,5)+(23,25-9 \frac{1}{8} )*4=54,5 \\ \\ 1)8 \frac{5}{12} -9,5=8\frac{5}{12} -9\frac{1}{2} =\frac{101}{12}-\frac{19}{2} =\frac{101-114}{12}=- \frac{13}{12} \\ \\ 2)23,25-9 \frac{1}{8}=23 \frac{1}{4} -9 \frac{1}{8}= \frac{93}{4} -\frac{73}{8}=\frac{186-73}{8}= \frac{113}{8} \\ \\ 3)2\frac{1}{6} :(- \frac{13}{12})=\frac{13}{6} *(- \frac{12}{13})=-\frac{13*12}{6*13} =-2 \\ \\ 4) \frac{113}{8} *4 = \frac{113*4}{8} = \frac{113}{2} =56\frac{1}{2}=56,5 \\ \\ 5)-2+56,5=56,5-2=54,5$