It could be even bc it goes up
21.4285 just divide 15 by 70
Is it multiple choice? An example would be 2, 8, 32...
The answer is 8/12 because you find a common denominator which is 12 so if you multiply 4×3 on the bottom you do it to the top which gives you 3 so 11-3 is 8. 11/12 - 3/12
