{"id":"informator-maturalny-matematyka-2010/zad/20","paper_id":"informator-maturalny-matematyka-2010","number":"20","points":1,"ptype":"closed","subject":"matematyka","category":"informator-maturalny","year":2010,"month":null,"level":null,"text":"Zadanie 20. (1 pkt)\nKtóra z liczb jest rozwiązaniem równania (\n)\n(\n)\nx\nx\nx\nx\n3\n2\n3\n1\n2\n?\nA. 11\n8\nB.\n11\n4\nC. 7\n4\nD.\n1","answer":"C","answer_text":null,"solution":"2(x-1)+x = x-3(2-3x) → 2x-2+x = x-6+9x → 3x-2=10x-6 → 4=7x → x=4/7. Odpowiedź: C.","image":"img/informator-maturalny-matematyka-2010/zad-20.webp","solution_image":null,"topics":null,"page_from":42,"source":"ai","answer_source":"ai","answer_text_source":null,"solution_source":"ai","text_source":"ocr","source_label":"Matematyka · Informator maturalny · 2010","subject_label":"Matematyka","category_label":"Informator maturalny","text_html":"<p>Zadanie 20. (1 pkt)<br>Która z liczb jest rozwiązaniem równania (<br>)<br>(<br>)<br>x<br>x<br>x<br>x<br>3<br>2<br>3<br>1<br>2<br>?<br>A. 11<br>8<br>B.<br>11<br>4<br>C. 7<br>4<br>D.<br>1</p>","solutions":[{"source":"ai","label":"AI","kind":"text","html":"<p>2(x-1)+x = x-3(2-3x) → 2x-2+x = x-6+9x → 3x-2=10x-6 → 4=7x → x=4/7. Odpowiedź: C.</p>"}]}