Add 84/90 and 3/72
84/90 + 3/72 is 39/40.
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,
3/72 = 3 × 5/72 × 5 = 15/360 - Add the two like fractions:
336/360 + 15/360 = 336 + 15/360 = 351/360 - 351/360 simplified gives 39/40
- So, 84/90 + 3/72 = 39/40
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