Answer: The solution of the above equation would be -12.
and First option is correct " Multiply both sides by 3x + 7."
Explanation:
Since we have given that

First we multiply (3x+7) on both sides , we get

And then we will solve it for the value of 'x'.

Hence, the solution of the above equation would be -12.
and First option is correct " Multiply both sides by 3x + 7."