Question

Me muestran el procedimiento por favor.


a) 5x + 11 =21 b) 2x - 12 =18 c) 5 (x - 3) =20

d) 3x + 14 =x + 42 e) 2 (x + 3) =x + 9 f) 6x - 18 =3x

g) $\frac{2x}{3} + 14 = 20$

Answer 1

a) 5x + 11 =21

5x = 21 - 11

5x = 10

x = 10/5

x = 2

b) 2x - 12 =18

2x = 18 + 12

2x = 30

x = 30/2

x = 15

c) 5 (x - 3) =20

5x - 15 = 20

5x = 20 + 15

5x = 35

x = 35/5

x = 7

d) 3x + 14 =x + 42

3x - x = 42 - 14

2x = 28

x = 28/2

x = 14

e) 2 (x + 3) =x + 9

2x + 6 = x + 9

2x - x = 9 - 6

x = 3

f) 6x - 18 = 3x

6x - 3x = 18

-3x = 18

x = -18/3

x = -6

g) 2x/3 + 14 = 20

3 2x/3 + 3 (14) = 3(20)

2x + 42 = 60

2x = 60 - 42

2x = 18

x = 18/2

x = 9

Espero haberte ayudado. Suerte en los estudios ≧◠◡◠≦.