Add 21/50 and 70/63
1st number: 21/50, 2nd number: 1 7/63
21/50 + 70/63 is 689/450.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 63 is 3150
Next, find the equivalent fraction of both fractional numbers with denominator 3150 - For the 1st fraction, since 50 × 63 = 3150,
21/50 = 21 × 63/50 × 63 = 1323/3150 - Likewise, for the 2nd fraction, since 63 × 50 = 3150,
70/63 = 70 × 50/63 × 50 = 3500/3150 - Add the two like fractions:
1323/3150 + 3500/3150 = 1323 + 3500/3150 = 4823/3150 - 4823/3150 simplified gives 689/450
- So, 21/50 + 70/63 = 689/450
In mixed form: 1239/450
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