Add 72/60 and 90/70
1st number: 1 12/60, 2nd number: 1 20/70
72/60 + 90/70 is 87/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
72/60 = 72 × 7/60 × 7 = 504/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
90/70 = 90 × 6/70 × 6 = 540/420 - Add the two like fractions:
504/420 + 540/420 = 504 + 540/420 = 1044/420 - 1044/420 simplified gives 87/35
- So, 72/60 + 90/70 = 87/35
In mixed form: 217/35
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