Verified Answer :

Hey there, 

Lets solve this equation step by step. 

⇒ First of all, Simplify 2x×3y to 6xy 

\(6xy-3x^2+7y * 2x-12y\) 

⇒ Now Simplify 7y×2x to 14yx

\(6xy-3x^2+14yx-12y\) 

⇒ Gather like terms 

\((6xy+14xy)-3x2-12y\) 

⇒ Simplify everything 

\(20xy-3x^2-12y\) 

                                        Hence Simplified. 

Okay, so if you have 2x3y-3y2+7y2x-12y, add all your like terms together. If you have a constent, add it to the equation.

4x-2y
2 (<- I think this is my correct answer, haven't done this in a while.)