Add 1/15 and 90/70
1st number: 1/15, 2nd number: 1 20/70
1/15 + 90/70 is 142/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
1/15 = 1 × 14/15 × 14 = 14/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210 - Add the two like fractions:
14/210 + 270/210 = 14 + 270/210 = 284/210 - 284/210 simplified gives 142/105
- So, 1/15 + 90/70 = 142/105
In mixed form: 137/105
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