Помогите пожалуйста с решением дробей
Пожалуйста помогите. Срочно нужно
1 ) x = -5. 2) x = -1.75 3 ) x = -7 4) x = - 0, 125 5) x = - 8
Ответ:
Пошаговое объяснение:
7x + 35 = 0
7x = -35
x = -35 : 7
x = -5
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4x + 7 = 0
4x = -7
x = -7 : 4
x = -1,75
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-5x + 12 = 0
5x = 12
x = 12 : 5
x = 2,4
2x + 1 = -6x
2x + 6x = -1
8x = -1
x = -1 : 8
x = -0,125
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10 + 5x = 2 + 4x
5x - 4x = 2 - 10
x = -8
6 - 2x = 4x - 30
4x + 2x = 6 + 30
6x = 36
x = 36 : 6
x = 6
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4(x - 2) = -x
4x - 8 = -x
4x + x = 8
5x = 8
x = 8 : 5
x = 1,6
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5(2 - 5x) = 6(-5x + 8)
10 - 25x = -30x + 48
30x - 25x = 48 - 10
5x = 38
x = 38 : 5
x = 7,6
2(-1- x) = 2x + 7
-2 - 2x = 2x + 7
2x + 2x = -2 - 7
4x = -9
x = -9 : 4
x = -2,25
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-9x + 10 = -x
9x - x = 10
8x = 10
x = 10 : 8
x = 1,25
40 - 5x = -10 + 3x
3x + 5x = 40 + 10
8x = 50
x = 50 : 8
x = 6,25
-4(5 - 4x) = x + 1
-20 + 16x = x + 1
16x - x = 1 + 20
15x = 21
x = 21 : 15
x = 1,4
============
-(4x - 8) = -3(x - 10)
-4x + 8 = -3x + 30
-4x + 3x = 30 - 8
-x = 22
x = -22
10x + 1 = 6x
10x - 6x = -1
4x = -1
x = -1 : 4
x = -0,25
6(-4x - 2) = 2x + 66
-24x - 12 = 2x + 66
2x + 24x = -12 - 66
26x = -78
x = -78 : 26
x = -3
-3(4x - 5) = -6x + 51
-12x + 15 = -6x + 51
12x - 6x = 15 - 51
6x = -36
x = -36 : 6
x = -6
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12 - (8x + 14) = 22
12 - 8x - 14 = 22
-2 - 8x = 22
-8x = 22 + 2
-8x = 24
x = -24 : 8
5(4x - 11) = -(-10x - 62)
20x - 55 = 10x + 62
20x - 10x = 62 + 55
10x = 117
x = 117 : 10
x = 11,7