Question

resuelve estas ecuaciones
ayudenme :)
a)x+2=21
b)35=5x
c)17-x=14

Answer 1

A)

x + 2 = 21

x = 21 - 2

x = 19

Solución : 

x = 19
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B)

35 = 5x

35/5 = x

7 = x

Solución : 

x = 7
------------------------------------

C)

17 - x = 14

- x = 14 - 17

- x = - 3

x = 3

Solución : 

x = 3

Answer 2

Resolver.

x + 2 = 21
x = 21 - 2
x = 19
------------------------------------------
35 = 5x
35/5 = x
  7  = x
------------------------------------------
17 - x = 14
17 - 14 = x
3 = x