In order to answer this: 81x = 36 ;; x = 36/81. You can simplify this by a factor of 9 and you get 4/9.
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gcf(81, 36) = 9 gcf(27, 54) = 27 gcf(81, 36, 27, 54) = 9
4.05 = 405/100 or 81/20 in fraction
The GCF is 9.
The lowest term of 78 over 81 in fraction form is 26/27
The area of square with a perimeter of 36 is 81. If the perimeter is 36, then each side must be 36 divided by 4, or 9. The area of a square is side squared, so that is 9 squared or 81.