Предмет: Алгебра, автор: lazarevichsophia

1)8 x - 5=6x+15
2)3(5-2x)+7= -3x+6​

Ответы

Автор ответа: Bandito030
0
А) 8 х -5=6х+15= 8x-5-6x=15= 8x-6x=15+5= 8x-6x=15+5= 2x=20= x=10

Б) 3(5-2х)+7= -3х+6= 15-6×+7=-3x+6= 22-6x=-3x+6= 22-6x+3x=6= -6x+3x=6-22= -3x=6-22= -3x=-16= х=16/3

ЕСЛИ ЧТО / это ДРОБЬ!
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Литература, автор: ankecha
у якому творі Шеллі засудив індивідуалізм ?
11 месяцев назад
Предмет: Қазақ тiлi, автор: sanzharkairkan
жина. 4. Мақаланы оқып, бөліктерін қалпына келтір.​
11 месяцев назад
Предмет: Химия, автор: galmizilla
Як називаєтся реакціїу результаті яких відбуваєтся ряд послідовних петворень
11 месяцев назад
Предмет: Русский язык, автор: Аноним
чем кыргызская юрта отличается от якутской?​
6 лет назад
Предмет: Английский язык, автор: almazzay
Решите пожалуйста и если не сложно переведите;)
1. My name`s Nina. I____________ twenty-one years old. a) Is c) am b) have d) got 2. Is he a teacher ? No, ____ ______. a) he not c) it isn`t b) he doesn`t d) he isn`t 3. My brother ___________like to go to school. a) doesn`t c) don`t b) not d) hasn`t 4. I _______ _________the Beatles last year, but now I do. a) not like c) don`t like b) didn`t like d) didn`t liked 5. _____ ________ ________milk in the bottle. a) It is any c) ) There is any b) There is some d) ) There are some 6. My mother ____________me to buy some bread. a) said c) told b) say to d) told to 7. Have you ___________been to Paris? a) often c) never b) usually d) ever 8. Tamara didn`t meet __________friends in the street. a) none c) any b) someone d) a 9. ___________you speak English, Igor? - Yes, a little. a) have c) has b) can d) are 10. We can see an English film __________Thursday. a) on c) in b) at d) of 11. "Old" is the opposite of "____________". a) young c) short b) tall d) thin 12. After I ___________ school, I`ll enter the University. a) to finish c) finishes b) have finished d) finish 13. She ____________, when her mother came. a) cook c) was cooking b) is cooking d) cooks 14. We had no car at that time because we _____________ our old one. a) sell c) have sold b) sold d) had sold 15. Julia ______ _______ to the cinema last night. a) has invited c) was invited b) is invited d) shall be invited
6 лет назад