Question

21-2=2x por favor ayudame a resolver esto que me enrrede

Answer 1

Resolver.

21 - 2 = 2x
19 = 2x
19/2 = x

Respuesta.
x = 19/2

Answer 2

21 - 2 = 2x

- 2x = 2 - 21

- 2x = - 19

x = -19/-2

x = 19/2

Solución : 

x = 19/2