Add 15/28 and 40/70
15/28 + 40/70 is 31/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
15/28 = 15 × 5/28 × 5 = 75/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
40/70 = 40 × 2/70 × 2 = 80/140 - Add the two like fractions:
75/140 + 80/140 = 75 + 80/140 = 155/140 - 155/140 simplified gives 31/28
- So, 15/28 + 40/70 = 31/28
In mixed form: 13/28
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