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 ","640"]}]]}],["$","h1",null,{"children":["Номер 640"," — ГДЗ ","алгебра"," ",9," класс ","Макарычев"]}],[["$","section","16650",{"children":[false,["$","div",null,{"className":"sheet-card statement","children":[["$","p",null,{"children":["$","b",null,{"children":["№ 640","."]}]}],["$","div",null,{"dangerouslySetInnerHTML":{"__html":"

Найдите члены арифметической прогрессии (а_n), обозначенные буквами:

\nа) а₁; а₂; –19; –11,5; а₅; ... ;
\nб) а₁; –8,5; а₃; –4,5; а₅; а₆; ... .\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-639","children":["← ","Номер 639"]}]," · ",["$","a",null,{"href":"/gdz/algebra/9-klass/makarychev/nomer-641","children":["Номер 641"," →"]}]," · ",["$","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 640\",\"text\":\"Найдите члены арифметической прогрессии (аn), обозначенные буквами: а) а1; а2; –19; –11,5; а5; ... ; б) а1; –8,5; а3; –4,5; а5; а6; ... .\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Ответ: а) a1 = –34; a2 = –26,5; a5 = –4\\n\\nб) a1 = –10,5; a3 = –6,5; a5 = –2,5; a6 = –0,5\"}},{\"@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 640\"}]}]"}}]]

Номер 640 — ГДЗ алгебра 9 класс Макарычев