Add 72/84 and 90/10
1st number: 72/84, 2nd number: 9 0/10
72/84 + 90/10 is 69/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
72/84 = 72 × 5/84 × 5 = 360/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
90/10 = 90 × 42/10 × 42 = 3780/420 - Add the two like fractions:
360/420 + 3780/420 = 360 + 3780/420 = 4140/420 - 4140/420 simplified gives 69/7
- So, 72/84 + 90/10 = 69/7
In mixed form: 96/7
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