Add 8/84 and 90/15
1st number: 8/84, 2nd number: 6 0/15
8/84 + 90/15 is 128/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
8/84 = 8 × 5/84 × 5 = 40/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
90/15 = 90 × 28/15 × 28 = 2520/420 - Add the two like fractions:
40/420 + 2520/420 = 40 + 2520/420 = 2560/420 - 2560/420 simplified gives 128/21
- So, 8/84 + 90/15 = 128/21
In mixed form: 62/21
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