Add 70/20 and 90/70
1st number: 3 10/20, 2nd number: 1 20/70
70/20 + 90/70 is 67/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
70/20 = 70 × 7/20 × 7 = 490/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
90/70 = 90 × 2/70 × 2 = 180/140 - Add the two like fractions:
490/140 + 180/140 = 490 + 180/140 = 670/140 - 670/140 simplified gives 67/14
- So, 70/20 + 90/70 = 67/14
In mixed form: 411/14
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