Add 12/8 and 90/18
1st number: 1 4/8, 2nd number: 5 0/18
12/8 + 90/18 is 13/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
12/8 = 12 × 9/8 × 9 = 108/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
90/18 = 90 × 4/18 × 4 = 360/72 - Add the two like fractions:
108/72 + 360/72 = 108 + 360/72 = 468/72 - 468/72 simplified gives 13/2
- So, 12/8 + 90/18 = 13/2
In mixed form: 61/2
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