Add 20/72 and 21/49
20/72 + 21/49 is 89/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 49 is 3528
Next, find the equivalent fraction of both fractional numbers with denominator 3528 - For the 1st fraction, since 72 × 49 = 3528,
20/72 = 20 × 49/72 × 49 = 980/3528 - Likewise, for the 2nd fraction, since 49 × 72 = 3528,
21/49 = 21 × 72/49 × 72 = 1512/3528 - Add the two like fractions:
980/3528 + 1512/3528 = 980 + 1512/3528 = 2492/3528 - 2492/3528 simplified gives 89/126
- So, 20/72 + 21/49 = 89/126
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