Home
О нас
Products
Services
Регистрация
Войти
Поиск
Lovata
@Lovata
December 2021
1
21
Report
20 баллов за 3 задания! (Математика) 7-8 класс
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
DariosI
Verified answer
№1
-(с²+10с+25)-(с²-4с+3с-12)=-с²-10с-25-с²+с+12=-2с²-9с-13
№2
6b-13=-55
6b=-55+13
6b=-42
b=-7
№3
8x+4y-32=0
3x+4y-7=0
5x-32+7=0
2x+y-8=0
5x=25
2x+y-8=0
x=5
y=8-2*5
x=5
y=-2
x*y=-2*5=-10
3 votes
Thanks 1
Lovata
Спасибо
×
Report "20 баллов за 3 задания! (Математика) 7-8 класс..."
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 © 2025 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
№1-(с²+10с+25)-(с²-4с+3с-12)=-с²-10с-25-с²+с+12=-2с²-9с-13
№2
6b-13=-55
6b=-55+13
6b=-42
b=-7
№3
8x+4y-32=0
3x+4y-7=0
5x-32+7=0
2x+y-8=0
5x=25
2x+y-8=0
x=5
y=8-2*5
x=5
y=-2
x*y=-2*5=-10