(7/9)-(5/18)
(14/18)-(5/18)
(14-5)/18
9/18
1/2 ◄
Rule: (a/b)-(c/d) = (ad-bc)/(bd)
(126-45)/162
81 / 162
1 / 2 ■
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7/8 - 2/6 = 7/8 - 1/3 = 21/24 - 8/24 = 13/24
7/8 minus 2/3 is 5/24
You have to get the same common denominator, 9x2 is 18, so 7x2 is 14. 14/18-5/18 is 9/18. 9/9 is 1 and 18/9 is 2, so you are left with 1/2
23/18
28 divided by 7 is 4. SO 63 minus 4 = 59