Add 45/7 and 70/20
1st number: 6 3/7, 2nd number: 3 10/20
45/7 + 70/20 is 139/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
45/7 = 45 × 20/7 × 20 = 900/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
70/20 = 70 × 7/20 × 7 = 490/140 - Add the two like fractions:
900/140 + 490/140 = 900 + 490/140 = 1390/140 - 1390/140 simplified gives 139/14
- So, 45/7 + 70/20 = 139/14
In mixed form: 913/14
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