Add 70/30 and 21/80
1st number: 2 10/30, 2nd number: 21/80
70/30 + 21/80 is 623/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
70/30 = 70 × 8/30 × 8 = 560/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
21/80 = 21 × 3/80 × 3 = 63/240 - Add the two like fractions:
560/240 + 63/240 = 560 + 63/240 = 623/240 - So, 70/30 + 21/80 = 623/240
In mixed form: 2143/240
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