Add 28/70 and 40/21
1st number: 28/70, 2nd number: 1 19/21
28/70 + 40/21 is 242/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
28/70 = 28 × 3/70 × 3 = 84/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
40/21 = 40 × 10/21 × 10 = 400/210 - Add the two like fractions:
84/210 + 400/210 = 84 + 400/210 = 484/210 - 484/210 simplified gives 242/105
- So, 28/70 + 40/21 = 242/105
In mixed form: 232/105
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