Add 12/40 and 4/45
12/40 + 4/45 is 7/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
12/40 = 12 × 9/40 × 9 = 108/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
4/45 = 4 × 8/45 × 8 = 32/360 - Add the two like fractions:
108/360 + 32/360 = 108 + 32/360 = 140/360 - 140/360 simplified gives 7/18
- So, 12/40 + 4/45 = 7/18
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