Add 28/30 and 18/70
28/30 + 18/70 is 25/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
28/30 = 28 × 7/30 × 7 = 196/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
18/70 = 18 × 3/70 × 3 = 54/210 - Add the two like fractions:
196/210 + 54/210 = 196 + 54/210 = 250/210 - 250/210 simplified gives 25/21
- So, 28/30 + 18/70 = 25/21
In mixed form: 14/21
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