Verified answer

add the x's together

add the y's together

2x + y + x-y + 3y

x: 2x + x = 3x

y: y - y + 3y = 3y

3x+3y

Treat them seperately,

i.e (2x), (y), (x), (-y), (3y)

Now add the x's together and likewise with the y's.

(2x) + (x) = 3x

AND

(y) + (-y) + (3y) = 3y *Note that the (y) and (-y) cancelled eachother out leaving the (3y)

So you combine these two terms and your final equation is 3x + 3y

5y dv