Add 15/70 and 42/81
15/70 + 42/81 is 277/378.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 81 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 70 × 81 = 5670,
15/70 = 15 × 81/70 × 81 = 1215/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
42/81 = 42 × 70/81 × 70 = 2940/5670 - Add the two like fractions:
1215/5670 + 2940/5670 = 1215 + 2940/5670 = 4155/5670 - 4155/5670 simplified gives 277/378
- So, 15/70 + 42/81 = 277/378
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