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4/36 + 15/36 = 19/36
It is: 9 times 4 = 36
4/9 x 36 = 16 (divide 9 into 36 = 4 and 4 x 4 =16)
127/12 - 51/9 = 151/12 - 46/9 = 453/36 - 184/36 = 269/36 = 717/36
1/3 +1/9 + 1/12= LCM 0f 3,9and12=36 Therefore 12/36+4/36+3/36 = 19/36