Solve b-9>20

I did 29-9>20
But I'm not sure that's right.

I think you meant

b-9 > 20
Now add 9 to both sides to get b by itself:
b > 29

I don't understand, can you please explain what you mean. Add 9 to what?

When you add 9 to both sides, the -9 and +9 cancel on the left side, leaving just the variable on that side. On the other side, you just add 9 to 20 to get 29. Whatever you do on one side, you MUST do to the other. I hope this helps! :)

That's part b of the question part A. I already have with is solve a-9=20 I did 20+9=29

29-9=20
a=29
Part c is how is solving the equation in part a similar to solving the inequality in part b?
Part d is how are the solutions different.
I don't understand part c or d.

To solve the inequality b - 9 > 20, you need to isolate the variable b on one side of the inequality sign. Here's how you can do it step by step:

1. Start with the inequality: b - 9 > 20
2. Add 9 to both sides of the inequality to get rid of the -9 on the left side: b - 9 + 9 > 20 + 9
3. Simplify both sides: b > 29

So, the correct answer is b > 29.

Your attempt of 29 - 9 > 20 is incorrect because you subtracted 9 from 29 instead of adding 9 to both sides of the inequality. Remember, when you perform an operation on one side of the inequality, you must perform the same operation on the other side.