Add 42/72 and 63/90
42/72 + 63/90 is 77/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
42/72 = 42 × 5/72 × 5 = 210/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
63/90 = 63 × 4/90 × 4 = 252/360 - Add the two like fractions:
210/360 + 252/360 = 210 + 252/360 = 462/360 - 462/360 simplified gives 77/60
- So, 42/72 + 63/90 = 77/60
In mixed form: 117/60
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