Add 42/70 and 20/84
42/70 + 20/84 is 88/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
42/70 = 42 × 6/70 × 6 = 252/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
20/84 = 20 × 5/84 × 5 = 100/420 - Add the two like fractions:
252/420 + 100/420 = 252 + 100/420 = 352/420 - 352/420 simplified gives 88/105
- So, 42/70 + 20/84 = 88/105
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