18 3/8-10 5/9=N, Pls Help Me

18 3/8-10 5/9=N


pls help me

Answer:

7 59/72

Step-by-step explanation:

You first find the LCD (least common denominator) of 8 and 9. To find the LCD of 8 and 9 you just multiply them. The answer is 72. The numerator should be multiplied after you changed the dwnominator. You need to multiply the bumerator with the number you multiplied by the denominator Unfortunately it can not be aplied if there is one or two even numbers for the LCD. Example:

18 3/8 - 10 5/9

=18 27/72 - 10 40/72

You can realize that 27 can not be subtracted by 40 so you borrow 18. 18 becomes 17 and the numerator becomes 99. To get 99 you add the numerator and the denominator. Example:

17 99/72 - 10 40 72

You then sbtract 17 with 10 and 99 with 40. Remember to never subtract the denominator. So tgis is how you get the answer:

= 7 59/72


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