Question

ПАМАГИТИ РЕшить уравнения

Answer 1

Ответ:

1: -5

2: 6

3: $\frac{4}{3}$

4:$\frac{181}{9}$

5:$\frac{167}{28}$

6:$\frac{31}{9}$

Пошаговое объяснение:

Answer 2

Ответ:

Пошаговое объяснение:

8x - 3(2x - 3) = 7x - 2(5x + 8)

8x - 6x + 9 = 7x - 10x - 16

2x + 9 = -3x - 16

2x + 3x = -16 - 9

5x = -25

x = -25:5

x = -5

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14(2x - 3) - 5(x + 4) = 2(3x + 5) + 5x

28x - 42 - 5x - 20 = 6x + 10 + 5x

23x - 62 = 11x + 10

23x - 11x = 10+62

12x = 72

x = 72:12

x = 6

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(9x - 6)/2 - (8 + 3x)/3 = -1 (*6)

3*(9x - 6) - 2*(8 + 3x) = -1 *6

27x - 18 - 16 - 6x = -6

21x - 34 = -6

21x = 34 - 6

21x = 28

x = 28 : 21

x = 1 1/3

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(x - 2)/6 + (x - 1)/15 = 3 - (3 - x)/12 (*60)

10*(x - 2) + 4*(x - 1) = 3*60 - 5*(3 - x)

10x - 20 + 4x - 4 = 180 - 15 + 5x

14x - 24 = 165 + 5x

14x - 5x = 165 + 24

9x = 189

x = 189:9

x = 21

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4 - (2x - 3)/5 = (4x - 15)/4 (*20)

4*20 - 4*(2x - 3) = 5*(4x - 15)

80 - 8x + 12 = 20x - 75

92 - 8x = 20x - 75

20x + 8x = 92 + 75

28x = 167

x = 167:28

x = 5 27/28

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3x - (6x + 2)/3 = (2x + 7)/5 (*15)

3x*15 - 5*(6x + 2) = 3*(2x + 7)

45x - 30x - 10 = 6x + 21

15x - 10 = 6x + 21

15x - 6x = 21+10

9x = 31

x = 31:9

x = 3 4/9

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