Add 84/15 and 42/70
1st number: 5 9/15, 2nd number: 42/70
84/15 + 42/70 is 31/5.
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,
84/15 = 84 × 14/15 × 14 = 1176/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
42/70 = 42 × 3/70 × 3 = 126/210 - Add the two like fractions:
1176/210 + 126/210 = 1176 + 126/210 = 1302/210 - 1302/210 simplified gives 31/5
- So, 84/15 + 42/70 = 31/5
In mixed form: 61/5
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