\(x\) . \(\dfrac{8}{16}\) = \(\dfrac{32}{16}\)

Sorry !

Mình bị nhầm đoạn cuối nhé !

\(\left(x-\dfrac{5}{2}\right)\)- \(\dfrac{1}{3}\) = \(\dfrac{1}{4}\) - \(\left(\dfrac{-3}{2}\right)\)

\(\left(x-\dfrac{5}{2}\right)\)- \(\dfrac{1}{3}\) = \(\dfrac{1}{4}\) + \(\dfrac{6}{4}\)

\(\left(x-\dfrac{5}{2}\right)\)- \(\dfrac{1}{3}\) = \(\dfrac{7}{4}\)

\(x-\dfrac{5}{2}\) = \(\dfrac{7}{4}\) + \(\dfrac{1}{3}\)

\(x\) - \(\dfrac{5}{2}\) = \(\dfrac{25}{12}\)

\(x\)       = \(\dfrac{25}{12}\) - \(\dfrac{5}{2}\)

\(x\)       = \(\dfrac{-5}{12}\)

Chúc bạn học tốt nhé !

a)\(\left\{10;20;21;30;31;32;40;41;42;43;50;51;52;53;54;60;61;62;63;64;65;70;71;72;73;74;75;76;80;81;82;83;84;85;86;87;90;91;92;93;94;95;96;97;98\right\}\)

b) \(\left\{41;82\right\}\)

c) \(\left\{69;78;\right\}\)

Chúc bạn học tốt nhé !~