Add 40/28 and 70/15
1st number: 1 12/28, 2nd number: 4 10/15
40/28 + 70/15 is 128/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
40/28 = 40 × 15/28 × 15 = 600/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
70/15 = 70 × 28/15 × 28 = 1960/420 - Add the two like fractions:
600/420 + 1960/420 = 600 + 1960/420 = 2560/420 - 2560/420 simplified gives 128/21
- So, 40/28 + 70/15 = 128/21
In mixed form: 62/21
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