Home
О нас
Products
Services
Регистрация
Войти
Поиск
MishenkaRRR
@MishenkaRRR
September 2021
1
13
Report
Алгебра 7 класс. Помогите, срочно, ибо хана.
Please enter comments
Please enter your name.
Please enter the correct email address.
Agree to
terms of service
You must agree before submitting.
Send
Answers & Comments
yaVolodenka
а)7x + 8y = -23;
5x + 4y = -13;
x = (-23 - 8y) / 7;
5((-23 - 8y) / 7) + 4y = -13;
(-115 - 40y) / 7 + 28y/7 = -13;
-115 - 12y = -13 * 7;
-12y = -91 + 115;
y = -(24 / 12) = -2;
x= (-23 - 8 * (-2))/ 7 = (-23 + 16) / 7 = -7/7 = -1;
x = -1; y = -2;
б)x/3 - y/5 = -3;
x/5 + y/2 = 22/5;
x = 3(y/5 - 3) = 3y/5 - 9;
(3y/5-9)/5 + y/2 = 22/5;
6y/5-18+5y = 44;
31y = (44 + 18) * 5;
y = 310 / 31 = 10;
x = 3 * 10 / 5 - 9 = 6 - 9 = -3;
0 votes
Thanks 1
More Questions From This User
See All
MishenkaRRR
August 2022 | 0 Ответы
dany tochki a 2 2 b 4 4 c 2 2 d 2 4 e 3 3 p 1 1 t
Answer
MishenkaRRR
August 2022 | 0 Ответы
ukazhite predlozhenie s punktuacionnoj oshibkoj 1 ya prochital skazku o stojkom olo
Answer
MishenkaRRR
August 2022 | 0 Ответы
zamenite slovosochetanie kamennye drevnosti postroennoe na osnove soglasovaniya
Answer
MishenkaRRR
August 2022 | 0 Ответы
help srochno pomogite najdite koordinaty centra i dlinu radiusa okruzhnosti
Answer
MishenkaRRR
August 2022 | 0 Ответы
mozhno li utverzhdat chto pri natiranii odnogo tela o drugoe u etih tel voznikaete7371c2a3c4a5043691c6491a76f774d 1972
Answer
MishenkaRRR
August 2022 | 0 Ответы
pomogite dayu 20 ballov algebra 7 klass esli vy uvideli vot takuyu galochku
Answer
MishenkaRRR
July 2022 | 0 Ответы
pomogite kto nibuda6178a767217449e729580f4a8a515bf 26147
Answer
MishenkaRRR
July 2022 | 0 Ответы
pomogite proshu proshub333235308d07542a2afc97cb2ef9ea3 5568
Answer
MishenkaRRR
July 2022 | 0 Ответы
ukazhite kol vo grammaticheskih osnov v predlozhenii 7 ot nego my znaem kakaya noch
Answer
MishenkaRRR
July 2022 | 0 Ответы
v kakom primere vydelennaya konstrukciya obosoblyaetsya 1 malaec gryob dvumya vmeste
Answer
рекомендуемые вопросы
rarrrrrrrr
August 2022 | 0 Ответы
o chem dolzhny pozabotitsya v pervuyu ochered vzroslye pri organizacionnom vyvoze n
danilarsentev
August 2022 | 0 Ответы
est dva stanka na kotoryh vypuskayut odinakovye zapchasti odin proizvodit a zapcha
myachina8
August 2022 | 0 Ответы
najti po grafiku otnoshenie v3v1 v otvetah napisano 9 no nuzhno reshenie
ydpmn7cn6w
August 2022 | 0 Ответы
Choose the correct preposition: 1.I am fond (out,of,from) literature. 2.where ar...
millermilena658
August 2022 | 0 Ответы
opredelite kak sozdavalas i kto sozdaval arabskoe gosudarstvo v kracii
MrZooM222
August 2022 | 0 Ответы
ch ajtmanov v rasskaze krasnoe yabloko ispolzuet metod rasskaz v rasskaze opi
timobila47
August 2022 | 0 Ответы
kakovo bylo naznachenie kazhdoj iz chastej vizantijskogo hrama pomogite pozhalujsta
ivanyyaremkiv
August 2022 | 0 Ответы
moment. 6....
pozhalujsta8b98a56c0152a07b8f4cbcd89aa2f01e 97513
sarvinozwakirjanova
August 2022 | 0 Ответы
pomogite pozhalusto pzha519d7eb8246a08ab0df06cc59e9dedb 6631
×
Report "Алгебра 7 класс. Помогите, срочно, ибо хана..."
Your name
Email
Reason
-Select Reason-
Pornographic
Defamatory
Illegal/Unlawful
Spam
Other Terms Of Service Violation
File a copyright complaint
Description
Helpful Links
О нас
Политика конфиденциальности
Правила и условия
Copyright
Контакты
Helpful Social
Get monthly updates
Submit
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
5x + 4y = -13;
x = (-23 - 8y) / 7;
5((-23 - 8y) / 7) + 4y = -13;
(-115 - 40y) / 7 + 28y/7 = -13;
-115 - 12y = -13 * 7;
-12y = -91 + 115;
y = -(24 / 12) = -2;
x= (-23 - 8 * (-2))/ 7 = (-23 + 16) / 7 = -7/7 = -1;
x = -1; y = -2;
б)x/3 - y/5 = -3;
x/5 + y/2 = 22/5;
x = 3(y/5 - 3) = 3y/5 - 9;
(3y/5-9)/5 + y/2 = 22/5;
6y/5-18+5y = 44;
31y = (44 + 18) * 5;
y = 310 / 31 = 10;
x = 3 * 10 / 5 - 9 = 6 - 9 = -3;