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adishirinovvas
@adishirinovvas
July 2022
1
5
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А) 3х-5(2х-1)=3(3-2х);
Б) (х-4)/2+3х=5;
В) 5х-6х2=0.
решите плз))))
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Опустошитель
А) 3x - 5(2x-1) = 3(3-2x)
3x - 10x + 5 = 9 - 6x
-7x + 5 = 9 - 6x
-7x + 6x = 9 - 5
-x = 4
x = - 4
Ответ: x = -4.
Б) (x-4)/2 + 3x = 5
x-4+6x=10
7x=10+4
7x=14
x=2
Ответ: x = 2.
В) 5x-6x2=0
x(5-6x)=0
x1 = 0
5-6x=0
5=6x
x2 = 5 / 6
Ответ: x1 = 0; x2 = 5 / 6.
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Answers & Comments
3x - 10x + 5 = 9 - 6x
-7x + 5 = 9 - 6x
-7x + 6x = 9 - 5
-x = 4
x = - 4
Ответ: x = -4.
Б) (x-4)/2 + 3x = 5
x-4+6x=10
7x=10+4
7x=14
x=2
Ответ: x = 2.
В) 5x-6x2=0
x(5-6x)=0
x1 = 0
5-6x=0
5=6x
x2 = 5 / 6
Ответ: x1 = 0; x2 = 5 / 6.