Add 90/70 and 30/84
1st number: 1 20/70, 2nd number: 30/84
90/70 + 30/84 is 23/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
90/70 = 90 × 6/70 × 6 = 540/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
30/84 = 30 × 5/84 × 5 = 150/420 - Add the two like fractions:
540/420 + 150/420 = 540 + 150/420 = 690/420 - 690/420 simplified gives 23/14
- So, 90/70 + 30/84 = 23/14
In mixed form: 19/14
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