Add 21/48 and 20/45
21/48 + 20/45 is 127/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 48 × 15 = 720,
21/48 = 21 × 15/48 × 15 = 315/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
20/45 = 20 × 16/45 × 16 = 320/720 - Add the two like fractions:
315/720 + 320/720 = 315 + 320/720 = 635/720 - 635/720 simplified gives 127/144
- So, 21/48 + 20/45 = 127/144
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