Hey there!
7 - v = 3
-v + 7 = 3
SUBTRACT 7 to BOTH SIDES
-v + 7 - 7 = 3 - 7
SIMPLIFY IT!
-v = 3 - 7
-v = -4
DIVIDE -1 to BOTH SIDES
-v/-1 = -4/-1
SIMPLIFY IT!
v = -4/-1
v = 4/1
v = 4
Therefore, your answer is: v = 4
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)