Add 42/45 and 3/40
42/45 + 3/40 is 121/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 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 40 × 9 = 360,
3/40 = 3 × 9/40 × 9 = 27/360 - Add the two like fractions:
336/360 + 27/360 = 336 + 27/360 = 363/360 - 363/360 simplified gives 121/120
- So, 42/45 + 3/40 = 121/120
In mixed form: 11/120
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