Question

what should be added to 3x+4y to get 5y​

Answer 1

Answer:

y-3x

Step by step explanation:

Let the quantity that should be added be A

So, (3x+4y)+A=5y
3x+4y+A=5y
3x+A=5y-4y
A=y-3x


Verification:

(3x+4y)+y-3x
=3x+4y+y-3x
=5y

Hence Proved