SOLUTION: 7/20 plus 3/9

Question 934809: 7/20 plus 3/9

Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
7/20 + 3/9
7*9/(20*9) + 3*20/(20*9)
(7*9 + 3*20)/(20*9)
(63 + 60)/180
123/180
0.683333333333
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