Add 42/14 and 90/20
1st number: 3 0/14, 2nd number: 4 10/20
42/14 + 90/20 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 14 × 10 = 140,
42/14 = 42 × 10/14 × 10 = 420/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
90/20 = 90 × 7/20 × 7 = 630/140 - Add the two like fractions:
420/140 + 630/140 = 420 + 630/140 = 1050/140 - 1050/140 simplified gives 15/2
- So, 42/14 + 90/20 = 15/2
In mixed form: 71/2
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