Предмет: Математика, автор: tututitut390

первое число в четыре раза больше второго если из первого числа вычесть 12, а ко второму прибавить 3, то получим равные между собой числа. найдите исходные числа

Ответы

Автор ответа: UrKey
1
Ответ:
Число - 5

Пошаговое объяснение:
Пусть 2-ое число будет x, тогда 1-ое 4x, если из первого вычесть 12, а ко второму прибавить 3, то одержим равные числа. Получаем уравнение:
4x - 12 = x + 3
4x - x = 12 + 3
3x = 15
x = 15 : 3
x = 5


tututitut390: Спасибо!!!!
UrKey: Рад помочь!
Похожие вопросы
Предмет: Русский язык, автор: Аноним
Предмет: Английский язык, автор: shatzi
Предмет: Английский язык, автор: gulden0
LEXICAL-GRAMMAR TEST 1. Choose the right variant. . She .... a letter at the moment. b) writes a) is writing c) has written 2. They haven't seen each other .....they left school c) for a) after b) since 3. She plays tennis twice..... a) days b) a week c) week. 4. I hate driving my a) father's b) fathers c) fathers' 5. They always arrange a date of competition, ....? a) aren't they b) didn't they c) don't they 6. I think Sam is..... than Bob. a) responsibler b) more responsible c) responsible 7. Have you seen "Adams Family 2" ....? a) already b) yet c)just 8. Chinese .. not only in China. a) is spoken b) speaks c) was spoken 9. I think.... French are polite and romantic. a) a 10. My brother Nick is very good.....Maths. a) at c) b) the b) in 2. Insert the article where necessary. I. If you have .. knowledge about this subject, you must show it. 2. This is where he keeps 3. On the way home I drop in at a shop to buy fruit. 4. I like to walk in... nice weather. 5. Mother said the Browns bought... new furniture. (5 points) 3. Insert the right form of the verbs (do, does, is, am, are) 1. He.. not live here. He lives near the bank. 2. I. very hungry.... you have something to eat? 3. She likes dogs, but not have one. 4. What... you want to read? 5. My brother... not like reading. 6. Do you know where my new books...? 7. Why... you so angry? 8. you often go to this restaurant? 9. She not going to tell him the truth. She not want anyone to know. 10. The child sleeping... not speak loudly.