How do you add (5x + y) + (4x + 2y)?

2 Answers
Mar 15, 2018

(5x+y)+(4x+2y)= 5x+y+4x+2y

= (5x+4x)+(y+2y)

=9x+3y

Explanation:

For this, we need to to add the x-coefficients and y-coefficients separately.

So I have first removed the brackets, since all the signs are positive, so there will be no change in any signs.

Then we add the x coefficients 5x and 4x,

which give us answer 9x.

Similarly, we add y-coefficients y and 2y,

which give us answer 3y..

Finally we get the answer as 9x+3y

Mar 15, 2018

(5x+y)+(4x+2y)=color(red)(9x+3y)

Explanation:

(color(blue)(5x)+color(lime)y)+(color(blue)(4x)+color(lime)(2y))

can be re-arranged as
color(white)("XXX")color(blue)(5x)+color(blue)(4x)+color(lime)(y)+color(lime)(2y)

color(white)("XXX")=color(blue)(9x)+color(lime)(3y)