Add 72/70 and 42/30
1st number: 1 2/70, 2nd number: 1 12/30
72/70 + 42/30 is 17/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
72/70 = 72 × 3/70 × 3 = 216/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
42/30 = 42 × 7/30 × 7 = 294/210 - Add the two like fractions:
216/210 + 294/210 = 216 + 294/210 = 510/210 - 510/210 simplified gives 17/7
- So, 72/70 + 42/30 = 17/7
In mixed form: 23/7
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