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buaksina
@buaksina
August 2022
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Решите пожалуйста)))Прошу.
А) -2x+7x=-10
б)-3y +(4y-2)=0
в) -(x+6)+3*(x+2)=0
г)2*(y-9)-5*(y-3,6)=27
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93931
а)
-2x+7x = -10
7x-2x = -10
5x = -10
x = -10:5
x = -2
Ответ :
-2.
б)
-3y+(4y-2) = 0
-3y+4y-2 = 0
4y-3y = 2
y = 2
Ответ :
2.
в)
-(x+6)+3*(x+2) = 0
-x-6+3x+6 = 0
3x-x = 0+6-6
2x = 0
x = 0:2
x = 0
Ответ :
0.
г)
2*(y-9)-5*(y-3,6) = 27
2y-18-5y+18 = 27
2y-5y = 27+18-18
-3y = 27
y = 27:(-3)
y = -9
Ответ :
-9.
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Answers & Comments
7x-2x = -10
5x = -10
x = -10:5
x = -2
Ответ : -2.
б) -3y+(4y-2) = 0
-3y+4y-2 = 0
4y-3y = 2
y = 2
Ответ : 2.
в) -(x+6)+3*(x+2) = 0
-x-6+3x+6 = 0
3x-x = 0+6-6
2x = 0
x = 0:2
x = 0
Ответ : 0.
г) 2*(y-9)-5*(y-3,6) = 27
2y-18-5y+18 = 27
2y-5y = 27+18-18
-3y = 27
y = 27:(-3)
y = -9
Ответ : -9.