Add 84/90 and 84/72
1st number: 84/90, 2nd number: 1 12/72
84/90 + 84/72 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
84/90 = 84 × 4/90 × 4 = 336/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
84/72 = 84 × 5/72 × 5 = 420/360 - Add the two like fractions:
336/360 + 420/360 = 336 + 420/360 = 756/360 - 756/360 simplified gives 21/10
- So, 84/90 + 84/72 = 21/10
In mixed form: 21/10
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