Add 12/70 and 90/84
1st number: 12/70, 2nd number: 1 6/84
12/70 + 90/84 is 87/70.
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,
12/70 = 12 × 6/70 × 6 = 72/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
90/84 = 90 × 5/84 × 5 = 450/420 - Add the two like fractions:
72/420 + 450/420 = 72 + 450/420 = 522/420 - 522/420 simplified gives 87/70
- So, 12/70 + 90/84 = 87/70
In mixed form: 117/70
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