Add 45/60 and 20/70
45/60 + 20/70 is 29/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
45/60 = 45 × 7/60 × 7 = 315/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
20/70 = 20 × 6/70 × 6 = 120/420 - Add the two like fractions:
315/420 + 120/420 = 315 + 120/420 = 435/420 - 435/420 simplified gives 29/28
- So, 45/60 + 20/70 = 29/28
In mixed form: 11/28
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