Add 45/20 and 20/70
1st number: 2 5/20, 2nd number: 20/70
45/20 + 20/70 is 71/28.
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,
45/20 = 45 × 7/20 × 7 = 315/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
20/70 = 20 × 2/70 × 2 = 40/140 - Add the two like fractions:
315/140 + 40/140 = 315 + 40/140 = 355/140 - 355/140 simplified gives 71/28
- So, 45/20 + 20/70 = 71/28
In mixed form: 215/28
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