Add 15/30 and 90/70
1st number: 15/30, 2nd number: 1 20/70
15/30 + 90/70 is 25/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
15/30 = 15 × 7/30 × 7 = 105/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210 - Add the two like fractions:
105/210 + 270/210 = 105 + 270/210 = 375/210 - 375/210 simplified gives 25/14
- So, 15/30 + 90/70 = 25/14
In mixed form: 111/14
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