# #3x + 3y = 15, color(white)("dd")3x - 5y = -41# what is the answer?

##### 1 Answer

#### Explanation:

Solve simultaneously

Put value of

That is

So it will be:

Solve it and find

Now in **Any Equation** put value 7 in place of

Like

So

if you use 2nd equation it will be: