1. 2300 divided by 45= 51
2.357 divided by 21= 17
3. 1215 divided by 15= 81
4.360 divided by 24= 15
7/9 times 21/10 can become 7/3 times 7/10 which is 49/30 which is 1 19/30 at it's most reduced form since 19 is prime.
the absolute value of -19 is 19 because the is the "real number" of -19
To solve this problem, you have to simplify your answer.
You may also look online to solve your problem.
After simplifying your question, The answer to your question is:
x=9/7.
I hope this helps. This answer is varified.