The key here is to get that v on one side. Remember your order of operations. First you'll need to divide by negative 4, to get:
2v-10=-14
Then you need to add 10 to each side, to get:
2v=-4
Then you divide by 2 to get the answer. Also, it's a good idea to check your answer by plugging the v value back into the original equation.
I'll let you take it from there.