Solutions by everydaycalculation.com

1^{st} number: 3 12/20, 2^{nd} number: 11 2/8

7220 + 908 is 29720.

- Find the least common denominator or LCM of the two denominators:

LCM of 20 and 8 is**40**

Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,

7220 = 72 × 220 × 2 = 14440 - Likewise, for the 2nd fraction, since 8 × 5 = 40,

908 = 90 × 58 × 5 = 45040 - Add the two like fractions:

14440 + 45040 = 144 + 45040 = 59440 - 594/40 simplified gives 29720
- So, 72/20 + 90/8 = 297/20

In mixed form: 141720

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