Add 4/21 and 25/80
4/21 + 25/80 is 169/336.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
4/21 = 4 × 80/21 × 80 = 320/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
25/80 = 25 × 21/80 × 21 = 525/1680 - Add the two like fractions:
320/1680 + 525/1680 = 320 + 525/1680 = 845/1680 - 845/1680 simplified gives 169/336
- So, 4/21 + 25/80 = 169/336
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