Question

What must be added to 5x + 2y to
get 2x - 4y?
​

Answer 1

Answer:

-6y-3x

Step-by-step explanation:

let the required number =a

therefore

5x+2y+a=2x-4y

a=2x-4y-(5x+2y)=2x-4y-5x-2y=-6y-3x

Answer 2

Answer:

( -3x-6y) should be added in

( 5x + 2y ) to get (2x - 4y)

Step-by-step explanation:

$\red{ = = = = = = = = = = = = = = = = =}$

Let X should be added.

then,

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

so, X= (2x-4y)-(5x + 2y) = (2x-5x)-4y-2y =( -3x-6y)

$\pink{ = = = = = = = = = = = = = = = }$

Hope it helps

:))