Add 21/45 and 12/8
1st number: 21/45, 2nd number: 1 4/8
21/45 + 12/8 is 59/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
21/45 = 21 × 8/45 × 8 = 168/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
12/8 = 12 × 45/8 × 45 = 540/360 - Add the two like fractions:
168/360 + 540/360 = 168 + 540/360 = 708/360 - 708/360 simplified gives 59/30
- So, 21/45 + 12/8 = 59/30
In mixed form: 129/30
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