Add 70/20 and 28/7
1st number: 3 10/20, 2nd number: 4 0/7
70/20 + 28/7 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 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 7 × 20 = 140,
28/7 = 28 × 20/7 × 20 = 560/140 - Add the two like fractions:
490/140 + 560/140 = 490 + 560/140 = 1050/140 - 1050/140 simplified gives 15/2
- So, 70/20 + 28/7 = 15/2
In mixed form: 71/2
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