Add 90/15 and 20/42
1st number: 6 0/15, 2nd number: 20/42
90/15 + 20/42 is 136/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
90/15 = 90 × 14/15 × 14 = 1260/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210 - Add the two like fractions:
1260/210 + 100/210 = 1260 + 100/210 = 1360/210 - 1360/210 simplified gives 136/21
- So, 90/15 + 20/42 = 136/21
In mixed form: 610/21
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