Add 20/70 and 28/30
20/70 + 28/30 is 128/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
20/70 = 20 × 3/70 × 3 = 60/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
28/30 = 28 × 7/30 × 7 = 196/210 - Add the two like fractions:
60/210 + 196/210 = 60 + 196/210 = 256/210 - 256/210 simplified gives 128/105
- So, 20/70 + 28/30 = 128/105
In mixed form: 123/105
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