Question

20 балов срочно

(х-1 15/16)+7 3/16=8 1/16+4 9/16;

15 3/28-(4 11/28+у)=7-1 9/28


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Answer 1

1.(x-$1\frac{15}{16}$)+$7\frac{3}{16}$=$8\frac{1}{16}$+$4\frac{9}{16}$

 (x-$\frac{31}{16}$)+$\frac{115}{16}$=(8+4)+($\frac{1}{16}$+$\frac{9}{16}$)

 x-$\frac{31}{16}$+$\frac{115}{16}$=12+$\frac{5}{8}$

 x+$\frac{21}{4}$=$12\frac{5}{8}$

 x+$\frac{21}{4}$=$\frac{101}{8}$

 x=$\frac{101}{8}$-$\frac{21}{4}$

 x=$\frac{59}{8}$

2.$15\frac{3}{28}$-($3\frac{11}{28}$+y)*7-$1\frac{37}{28}$

 $\frac{423}{28}$-($\frac{123}{28}$+y)*7-$\frac{37}{28}$

  $\frac{423}{28}$-($\frac{123}{4}$+7y)-$\frac{37}{28}$

 $\frac{423}{28}$-$\frac{123}{4}$-7Y-$\frac{37}{28}$

  -$\frac{475}{28}$-7y