Add 15/5 and 90/42
1st number: 3 0/5, 2nd number: 2 6/42
15/5 + 90/42 is 36/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
15/5 = 15 × 42/5 × 42 = 630/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
90/42 = 90 × 5/42 × 5 = 450/210 - Add the two like fractions:
630/210 + 450/210 = 630 + 450/210 = 1080/210 - 1080/210 simplified gives 36/7
- So, 15/5 + 90/42 = 36/7
In mixed form: 51/7
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