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Пегас11
@Пегас11
March 2022
2
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СРОЧНО ДАМ 100 БАЛЛОВ
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Samira25032005
_________
15x = 21
x = 1,4
y = 10 - 7x = 10 - 7 * 1,4 = 10 - 9,8 = 0,2
Ответ : (1,4 ; 0,2)
_______________
- 5y = - 30
y = 6
3x - 6 = 6
3x = 12
x = 4
Ответ : (4 ; 6)
1 votes
Thanks 1
Universalka
Неверно
Universalka
А второе задание не надо было решать?
Universalka
Verified answer
1) 1+2x -2y=3x-4y
10-4x-4y=3x -3y
x-2y=1
7x+у=10
х=2y-1
7(2y-1)+y=10
14y-7+y=10
15у+7=10
15у=3
у=0,2
x=1,4
(1,4;0,2)
0 votes
Thanks 1
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Answers & Comments
_________
15x = 21
x = 1,4
y = 10 - 7x = 10 - 7 * 1,4 = 10 - 9,8 = 0,2
Ответ : (1,4 ; 0,2)
_______________
- 5y = - 30
y = 6
3x - 6 = 6
3x = 12
x = 4
Ответ : (4 ; 6)
Verified answer
1) 1+2x -2y=3x-4y10-4x-4y=3x -3y
x-2y=1
7x+у=10
х=2y-1
7(2y-1)+y=10
14y-7+y=10
15у+7=10
15у=3
у=0,2
x=1,4
(1,4;0,2)