[{"id":3},112,[36,18,30],{"a":56,"b":3,"c":131,"y":163,"t":150,"x":612,"h":2,"g":13,"j":7748,"h1":2,"h2":3,"h3":6,"pos2":1,"pos3":2,"cid":1,"rnd":0},{"d":9,"e":3,"f":3,"h":243,"t":200,"b":4,"c":4,"a":51200,"rnd":0},{"list1":[-58,-86,83],"siList1":-1,"list2":[-86,83,-56],"siList2":1},{"ty":1,"c":3,"a":3,"b":-4,"n":2},{"c":3,"b":-1,"a":-3,"d":5,"e":3,"rnd":3},{"ps2":{"ts":-2,"ms":-5},"ps1":{"ts":7,"ms":-15}},{"ps2":{"ts":-2,"ms":-4},"ps1":{"ts":2,"ms":-8}},"{\"order\":[3,0,2,1],\"js\":\"\"}",{"type":0,"c":12,"alpha":169,"R":160,"diem":7,"tia":0,"A":{"x":30,"y":200},"B":{"x":400,"y":200},"C":{"x":252,"y":200},"D":{"x":94.93965064837377,"y":169.4705607397528}},"{\"order\":[0,2,3,1],\"js\":\"\"}"]
["H;O;A;C","2^4\\times7","6",[1,1,1,0,0,0],[0],"2","51","-2",{"ts":"-1","ms":"15"},{"ts":"-1","ms":"2"},"[\"0\"]",[1],"[\"0\"]"]
Tính: \(\left(\frac{4}{5}+\frac{1}{15}\right):\left(\frac{1}{3}-\frac{8}{9}\right)\)
- \(-\frac{39}{25}\)
- \(\frac{-13}{25}\)
- \(-\frac{1}{3}\)
- -1
Hướng dẫn giải:
\(\left(\frac{4}{5}+\frac{1}{15}\right):\left(\frac{1}{3}-\frac{8}{9}\right)=\frac{1}{3}:\frac{-5}{9}=-\frac{3}{5}\)