Add 21/70 and 4/84
21/70 + 4/84 is 73/210.
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,
21/70 = 21 × 6/70 × 6 = 126/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
4/84 = 4 × 5/84 × 5 = 20/420 - Add the two like fractions:
126/420 + 20/420 = 126 + 20/420 = 146/420 - 146/420 simplified gives 73/210
- So, 21/70 + 4/84 = 73/210
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