Question

sea x=2y +5 si x = 3 entonces y =

Answer 1

 x=3

x=2y+5
3=2y+5
3-5=2y
-2=2y
-2/2=y
-1=y

x=3                  y= -1

Answer 2

x = 3y +5    Si x= 3 entonces y = ?

3 = 2y +5
3 -5 = 2y
-2 = 2y
-2/2 = y
y = -1

Para x = 3 , y = -1