Add 42/12 and 90/45
1st number: 3 6/12, 2nd number: 2 0/45
42/12 + 90/45 is 11/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
42/12 = 42 × 15/12 × 15 = 630/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
90/45 = 90 × 4/45 × 4 = 360/180 - Add the two like fractions:
630/180 + 360/180 = 630 + 360/180 = 990/180 - 990/180 simplified gives 11/2
- So, 42/12 + 90/45 = 11/2
In mixed form: 51/2
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