Answer:
144x^2−y^2−169 because ther are no like terms
Step-by-step explanation:
Answer:72
Step-by-step explanation:
The big one is 4 times the small one
5x + 2 must be equal to 17. Subtract to from both sides, then divide both sides by 5 and x = 3. 3y - 6 must equal 21. Add 6 to both sides, then divide both sides by 3, and y = 9.
