D will form a triangle
good luck
50 pairs of whole numbers
Answer:

Step-by-step explanation:
Given
![3y + 7 + 4y + 3 = [\ ]y + [\ ]](https://tex.z-dn.net/?f=3y%20%2B%207%20%2B%204y%20%2B%203%20%3D%20%5B%5C%20%5Dy%20%2B%20%5B%5C%20%5D)
Required
Simplify
We have:

Collect like terms

Evaluate like terms

Subtract the 12x^2 first.
5x - 4 = 6
Add the four
5x = 10
Then divide the 5 from both sides
X = 2