Add 70/15 and 80/7
1st number: 4 10/15, 2nd number: 11 3/7
70/15 + 80/7 is 338/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
70/15 = 70 × 7/15 × 7 = 490/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
80/7 = 80 × 15/7 × 15 = 1200/105 - Add the two like fractions:
490/105 + 1200/105 = 490 + 1200/105 = 1690/105 - 1690/105 simplified gives 338/21
- So, 70/15 + 80/7 = 338/21
In mixed form: 162/21
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