Solution given with a bit expanded explanations
To remove the
Multiply everything in the right hand brackets (green) by everything in the left hand brackets (blue) giving:
Everything is even so reduce the number values by dividing both sides by 2. The equation is still true; what you do to one side you do to the other.
Subtract 25 from both sides
We now have a quadratic and you solve as per the method used by Rithvik