I don't understand this math. 2y^2-5+1+2y^2-6y^2-3-4y

-2y^2 - 4y - 7

Step-by-step explanation:

If what you need to do is to combine like terms, then do this:

2y^2 - 5 + 1 + 2y^2 - 6y^2 - 3 - 4y =

= 2y^2 + 2y^2 - 6y^2 - 4y - 5 + 1 - 3

= -2y^2 - 4y - 7

2y²-5+1+2y²-6y²-3-4y

Just combine like terms

2y²+2y²-6y²-4y-5+1-3

-5 + 1 -3= -7

2y²+2y²-6y²= -2y²

-2y²-4y-7

and we are done!

19.side- angle- side

20. angle- side- angle

step-by-step explanation:

20

step-by-step explanation:

assuming you meant there are 24 pounds of apples in each case, if this is not what you meant, correct me so i can you further