Solutions by everydaycalculation.com

1420 + 660 is 45.

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

LCM of 20 and 60 is**60**

Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,

1420 = 14 × 320 × 3 = 4260 - Likewise, for the 2nd fraction, since 60 × 1 = 60,

660 = 6 × 160 × 1 = 660 - Add the two like fractions:

4260 + 660 = 42 + 660 = 4860 - 48/60 simplified gives 45
- So, 14/20 + 6/60 = 4/5

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