Question

2/9+{-3/7}

Answer 1

Order of opererations.
1.) Let's leave -3/7 as -3/7 rather than convert it to a decimal

2.) 9+(-3/7) is the same as 9-(3/7) which we can simplify by finding an LCD.
9(7)/7=63/7 63/7+3/7=66/7. Again, we'll leave it as a fraction for now to be more precise.

3.) 2/(66/7). A trick here is the invert the denominator, and multiply it by the numerator. For instance, 2(7/66)=14/66. You can simplify it from there.

Feel free to ask if you have any questions.

Answer 2

No questions, I had all that and worked to 7/33 or am I wrong

Answer 3

I think that's right.