Add 12/28 and 40/45
12/28 + 40/45 is 83/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
12/28 = 12 × 45/28 × 45 = 540/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
40/45 = 40 × 28/45 × 28 = 1120/1260 - Add the two like fractions:
540/1260 + 1120/1260 = 540 + 1120/1260 = 1660/1260 - 1660/1260 simplified gives 83/63
- So, 12/28 + 40/45 = 83/63
In mixed form: 120/63
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