Add 21/80 and 70/7
1st number: 21/80, 2nd number: 10 0/7
21/80 + 70/7 is 821/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 7 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
21/80 = 21 × 7/80 × 7 = 147/560 - Likewise, for the 2nd fraction, since 7 × 80 = 560,
70/7 = 70 × 80/7 × 80 = 5600/560 - Add the two like fractions:
147/560 + 5600/560 = 147 + 5600/560 = 5747/560 - 5747/560 simplified gives 821/80
- So, 21/80 + 70/7 = 821/80
In mixed form: 1021/80
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