Answer:
I think: 0 = 3x + b or b = -3x + 0 or x = -b + 0/3 or 3 = -b + 0/x
Sorry if you get this wrong..
Answer:

Step-by-step explanation:
If you foil this equation you will get:

And by dividing it, you will get;

That is your answer!
Answer:
2
Step-by-step explanation:
Make a list
10: 1, <u>2, </u>5, 10
42: 1,<u> 2,</u> 3, 6, 7, 14, 21