Answer:

Step-by-step explanation:

Answer:
x = 40
Step-by-step explanation:
5x + 900 = 1100
=> 5x = 1100 - 900
=> 5x = 200
=> x = 40
Hoped this helped.
Answer:
45
Step-by-step explanation:
Answer:
Step-by-step explanation:
3x^2 + 7x + 9x^2 - 3x + 2
3x^2 + 9x^2 + 7x - 3x + 2
12x^2 + 7x - 3x + 2
Answer: 12x^2 + 4x + 2
This should be correct unless i'm dumb...