Add 28/70 and 70/42
1st number: 28/70, 2nd number: 1 28/42
28/70 + 70/42 is 31/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 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 42 × 5 = 210,
70/42 = 70 × 5/42 × 5 = 350/210 - Add the two like fractions:
84/210 + 350/210 = 84 + 350/210 = 434/210 - 434/210 simplified gives 31/15
- So, 28/70 + 70/42 = 31/15
In mixed form: 21/15
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