add 5 1/27 + 3 7/8 + 12 7/9=

Question

add the fractions

Answer 1

change all 3 to improper fractions

so 5 1/27 = 5(27)+1 all over 27 = 136/27

3 7/8 = 3(8) + 7 all over 8 = 31/8

12 7/9 = 12(9) + 7 all over 9 = 115/9

now need a common denominator, which will be 27(8) = 216

so, 136/27 needs to be multiplied by (8/8) = 1088/216

31/8 needs to be multiplied by (27/27) = 537/216

and 115/9 gets multiplied by (24/24) = 2760/216

Add all numerators (1088 + 537 + 2760) = 4385

last divide by 216 to get mixed number = 20 65/216