5:[["$","div",null,{"className":"crumbs","children":[["$","span",null,{"children":["$","a",null,{"href":"/","children":"Главная"}]}],["$","span",null,{"children":["$","a",null,{"href":"/gdz","children":"ГДЗ"}]}],["$","span",null,{"children":["$","a",null,{"href":"/gdz/algebra/9-klass/makarychev","children":["Алгебра"," ",9," класс ","Макарычев"]}]}],["$","span",null,{"children":["Номер ","647"]}]]}],["$","h1",null,{"children":["Номер 647"," — ГДЗ ","алгебра"," ",9," класс ","Макарычев"]}],[["$","section","16447",{"children":[false,["$","div",null,{"className":"sheet-card statement","children":[["$","p",null,{"children":["$","b",null,{"children":["№ 647","."]}]}],["$","div",null,{"dangerouslySetInnerHTML":{"__html":"

Найдите:

\nа) первый положительный член арифметической прогрессии –101/2; –101/4; –10; ... ;
\n
\nб) первый отрицательный член арифметической прогрессии 81/2; 81/3; 81/6; ... .\n

"}}]]}],["$","div",null,{"className":"notice","children":["Разбор этого задания готовится. Пока можно ",["$","a",null,{"href":"/reshit","children":"решить его по фото"}]," — ИИ объяснит по шагам."]}]]}]],["$","p",null,{"children":[["$","a",null,{"href":"/gdz/algebra/9-klass/makarychev/nomer-646","children":["← ","Номер 646"]}]," · ",["$","a",null,{"href":"/gdz/algebra/9-klass/makarychev/nomer-648","children":["Номер 648"," →"]}]," · ",["$","a",null,{"href":"/gdz/algebra/9-klass/makarychev","children":"Все номера"}]]}],["$","script",null,{"type":"application/ld+json","dangerouslySetInnerHTML":{"__html":"[{\"@context\":\"https://schema.org\",\"@type\":\"Question\",\"name\":\"Алгебра 9 класс Макарычев, номер 647\",\"text\":\"Найдите: а) первый положительный член арифметической прогрессии –101/2; –101/4; –10; ... ; б) первый отрицательный член арифметической прогрессии 81/2; 81/3; 81/6; ... .\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Ответ: а) 0,25 (или 1/4); б) –1/6\"}},{\"@context\":\"https://schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Главная\",\"item\":\"https://reshay.ai/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"ГДЗ\",\"item\":\"https://reshay.ai/gdz\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Алгебра 9 класс Макарычев\",\"item\":\"https://reshay.ai/gdz/algebra/9-klass/makarychev\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Номер 647\"}]}]"}}]]

Номер 647 — ГДЗ алгебра 9 класс Макарычев