Add 80/60 and 9/7
1st number: 1 20/60, 2nd number: 1 2/7
80/60 + 9/7 is 55/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 7 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
80/60 = 80 × 7/60 × 7 = 560/420 - Likewise, for the 2nd fraction, since 7 × 60 = 420,
9/7 = 9 × 60/7 × 60 = 540/420 - Add the two like fractions:
560/420 + 540/420 = 560 + 540/420 = 1100/420 - 1100/420 simplified gives 55/21
- So, 80/60 + 9/7 = 55/21
In mixed form: 213/21
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