Add 28/60 and 20/70
28/60 + 20/70 is 79/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
28/60 = 28 × 7/60 × 7 = 196/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
20/70 = 20 × 6/70 × 6 = 120/420 - Add the two like fractions:
196/420 + 120/420 = 196 + 120/420 = 316/420 - 316/420 simplified gives 79/105
- So, 28/60 + 20/70 = 79/105
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