Question

ayuda por favor doy corona y 40 puntos si no saben no contestén​

Answer 1

Respuesta:

a) -8, b)3, c) 55/2, d)15, e) 65/33, f) -94/7

Explicación paso a paso:

a) 3 ( x + 12) = 12

3( x + 12) / 3 = 12/3

x + 12 = 4

x = -12 - 4

x = -8

b) (12x - 8) : 2 = 14

6x - 4 = 14

6x = 18

x = 3

c) (2x - 5 ) . 4 = 20

4(2x - 5 ) 200

4(2x - 5 ) / 4 = 200/4

2x - 5 = 50

2x = 55

x = 55/2

d) 2 ( x - 4 ) = x + 7

2x - 8 = x + 7

2x = x + 15

2x - x = 15

x = 15

e) ( 35x - 50) = 2x + 15

35x = 2x + 65

33x = 65

x = 65/33

f) ( x + 2) .6 = 2 ( 10 + x)

6x+ 12 = 200 + 20x - 12

5x = 20x + 188

- 14x = 188

x = 188/-14

x = - 94/7