Add 42/35 and 90/20
1st number: 1 7/35, 2nd number: 4 10/20
42/35 + 90/20 is 57/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 35 × 4 = 140,
42/35 = 42 × 4/35 × 4 = 168/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
90/20 = 90 × 7/20 × 7 = 630/140 - Add the two like fractions:
168/140 + 630/140 = 168 + 630/140 = 798/140 - 798/140 simplified gives 57/10
- So, 42/35 + 90/20 = 57/10
In mixed form: 57/10
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