Add 15/70 and 90/60
1st number: 15/70, 2nd number: 1 30/60
15/70 + 90/60 is 12/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
15/70 = 15 × 6/70 × 6 = 90/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
90/60 = 90 × 7/60 × 7 = 630/420 - Add the two like fractions:
90/420 + 630/420 = 90 + 630/420 = 720/420 - 720/420 simplified gives 12/7
- So, 15/70 + 90/60 = 12/7
In mixed form: 15/7
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