4 9 sub is 7 squared
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The first part of the problem we take an object and break it down to four equal subset. Mathematical written as 1/4. The next step is to further divide each of the four subsets into four sub-subsets. That will give a total of sixteen sub sets of the whole. 1/4*1/4=1/16 or object divided into subset, subset, subset, subset and then each subset divided into sub-subset, sub-subset, sub-subset, sub-subset. Gives a total of sixteen sub-subset
9/4
4/9 is equal to 4:9 the ratio.
3/4 ÷ 4/9 = 3/4 × 9/4 = (3×9)/(4×4) = 27/16 = 1 11/16
It is: 8/9 minus 4/9 = 4/9