Add 84/90 and 20/72
84/90 + 20/72 is 109/90.
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,
20/72 = 20 × 5/72 × 5 = 100/360 - Add the two like fractions:
336/360 + 100/360 = 336 + 100/360 = 436/360 - 436/360 simplified gives 109/90
- So, 84/90 + 20/72 = 109/90
In mixed form: 119/90
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