Add 42/49 and 27/70
42/49 + 27/70 is 87/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 70 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 49 × 10 = 490,
42/49 = 42 × 10/49 × 10 = 420/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
27/70 = 27 × 7/70 × 7 = 189/490 - Add the two like fractions:
420/490 + 189/490 = 420 + 189/490 = 609/490 - 609/490 simplified gives 87/70
- So, 42/49 + 27/70 = 87/70
In mixed form: 117/70
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