Add 42/45 and 63/72
42/45 + 63/72 is 217/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
42/45 = 42 × 8/45 × 8 = 336/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
63/72 = 63 × 5/72 × 5 = 315/360 - Add the two like fractions:
336/360 + 315/360 = 336 + 315/360 = 651/360 - 651/360 simplified gives 217/120
- So, 42/45 + 63/72 = 217/120
In mixed form: 197/120
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