Respuesta :

2v + 7 = 3
subtract 7 from both sides
2v = -4
divide both sides by 2 to isolate the variable 
v = -2

to check: 
2(-2) + 7 =?= 3
-4 + 7 =?= 3
3 = 3


Hope this helps :)
prez1
2v = 2X-2
V = -2
2 X -2 = -4
-4 + 7 = 3