Add 70/84 and 9/30
70/84 + 9/30 is 17/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
70/84 = 70 × 5/84 × 5 = 350/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
9/30 = 9 × 14/30 × 14 = 126/420 - Add the two like fractions:
350/420 + 126/420 = 350 + 126/420 = 476/420 - 476/420 simplified gives 17/15
- So, 70/84 + 9/30 = 17/15
In mixed form: 12/15
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