Add 72/70 and 9/42
1st number: 1 2/70, 2nd number: 9/42
72/70 + 9/42 is 87/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 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 42 × 5 = 210,
9/42 = 9 × 5/42 × 5 = 45/210 - Add the two like fractions:
216/210 + 45/210 = 216 + 45/210 = 261/210 - 261/210 simplified gives 87/70
- So, 72/70 + 9/42 = 87/70
In mixed form: 117/70
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