Answer :
To solve this expression we are going to use ''add or subtract property of equality'' and ''multiply or divide propery of equality''
3x=5+7x
As a first step you have to pass subtracting the 3x to the other side, and same with 5:
-5=7x-3x
-5=4x
Now, we need to pass 4 dividing the other side:
x=-5/4
So, the answer is D