Add 8/21 and 16/40
8/21 + 16/40 is 82/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
8/21 = 8 × 40/21 × 40 = 320/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
16/40 = 16 × 21/40 × 21 = 336/840 - Add the two like fractions:
320/840 + 336/840 = 320 + 336/840 = 656/840 - 656/840 simplified gives 82/105
- So, 8/21 + 16/40 = 82/105
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