Question

2x – 5 = x + 10

5x – 3x – 8 = – 29 + 9x

5 – (4x + 2) = 8 + 2(x – 1)

3x = x(7+3x)

3(x –1) = 8x +4

0,5x + 9 = √81

Answer 1

Explicação passo-a-passo:

2x – 5 = x + 10

2x - x = 10 + 5

x = 15

5x – 3x – 8 = – 29 + 9x

2x - 8 = 9x - 29

2x - 9x = -29 + 8

-7x = -21

x = -21/-7

x = 3

5 – (4x + 2) = 8 + 2(x – 1)

5 - 4x - 2 = 8 + 2x - 2

- 4x + 3 = 2x + 6

-4x - 2x = 6 - 3

-6x = 3

x = 3/-6

x = -1/2

3x = x(7+3x)

3x = 7x + 3x²

3x² + 7x - 3x = 0

3x² + 4x = 0

x . (3x + 4) = 0

x = 0

3x + 4 = 0

X = -4/3

3(x –1) = 8x +4

3x - 3 = 8x + 4

3x - 8x = 4 + 3

-5x = 7

x = -7/5

0,5x + 9 = √81

X/2 + 9 = 9

X/2 = 0

X = 0