Add 15/5 and 90/70
1st number: 3 0/5, 2nd number: 1 20/70
15/5 + 90/70 is 30/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
15/5 = 15 × 14/5 × 14 = 210/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
90/70 = 90 × 1/70 × 1 = 90/70 - Add the two like fractions:
210/70 + 90/70 = 210 + 90/70 = 300/70 - 300/70 simplified gives 30/7
- So, 15/5 + 90/70 = 30/7
In mixed form: 42/7
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