Add 70/35 and 80/21
1st number: 2 0/35, 2nd number: 3 17/21
70/35 + 80/21 is 122/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 35 × 3 = 105,
70/35 = 70 × 3/35 × 3 = 210/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
80/21 = 80 × 5/21 × 5 = 400/105 - Add the two like fractions:
210/105 + 400/105 = 210 + 400/105 = 610/105 - 610/105 simplified gives 122/21
- So, 70/35 + 80/21 = 122/21
In mixed form: 517/21
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