Add 20/63 and 70/84
20/63 + 70/84 is 145/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
20/63 = 20 × 4/63 × 4 = 80/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
70/84 = 70 × 3/84 × 3 = 210/252 - Add the two like fractions:
80/252 + 210/252 = 80 + 210/252 = 290/252 - 290/252 simplified gives 145/126
- So, 20/63 + 70/84 = 145/126
In mixed form: 119/126
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