Add 90/70 and 72/7
1st number: 1 20/70, 2nd number: 10 2/7
90/70 + 72/7 is 81/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
90/70 = 90 × 1/70 × 1 = 90/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
72/7 = 72 × 10/7 × 10 = 720/70 - Add the two like fractions:
90/70 + 720/70 = 90 + 720/70 = 810/70 - 810/70 simplified gives 81/7
- So, 90/70 + 72/7 = 81/7
In mixed form: 114/7
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