The answer is A
Sine you are subtracting,
x-x=o
1- -8 =9 since subtracting a negative is adding a positive.
So the answer is 9/x-1
The answer to your question,
If rounded it would be 12.3, if not 12.5 with a repeated.
-Mabel
70 = 50 * x/100
x = 70/50*100 = 140
Seventh is 140% of 50.
Convert to improper fraction: 2 5/12 = 29/12
Divide 29 by 12: 29/12 = 2.42
2.42 inches