Add 30/70 and 63/80
30/70 + 63/80 is 681/560.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
30/70 = 30 × 8/70 × 8 = 240/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
63/80 = 63 × 7/80 × 7 = 441/560 - Add the two like fractions:
240/560 + 441/560 = 240 + 441/560 = 681/560 - So, 30/70 + 63/80 = 681/560
In mixed form: 1121/560
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