Add 8/40 and 2/21
8/40 + 2/21 is 31/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 21 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
8/40 = 8 × 21/40 × 21 = 168/840 - Likewise, for the 2nd fraction, since 21 × 40 = 840,
2/21 = 2 × 40/21 × 40 = 80/840 - Add the two like fractions:
168/840 + 80/840 = 168 + 80/840 = 248/840 - 248/840 simplified gives 31/105
- So, 8/40 + 2/21 = 31/105
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