Question

cuanto es
a) 3x – 2 = 4x – 7
b) 6x – 3 = 2x + 1
c) 8 • (x – 2) = 12 • (x – 3)
d) 3 • (6 + x) = 2 • (x – 6)
gracias

Answer 1

Respuesta:

a) 3x - 2 = 4x -7

3x -4x = -7 + 2

-1x = -5

x= -5: (-1)

x= 5

b) 6x -3 = 2x +1

6x - 2x = 1 +3

4x = 4

x= 4: 4

x=1

c) 8. (x -2) = 12. ( x-3)

8x - 16 = 12x -36

8x - 12x = -36 +16

-4x = -20

x= -20 : (-4)

x= 5

d) 3. (6+x) = 2 . (x - 6)

18 + 3x = 2x - 12

3x -2x = -12 -18

1x = 30

x= 30: 1

x= 30