Add 90/5 and 20/42
1st number: 18 0/5, 2nd number: 20/42
90/5 + 20/42 is 388/21.
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,
90/5 = 90 × 42/5 × 42 = 3780/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210 - Add the two like fractions:
3780/210 + 100/210 = 3780 + 100/210 = 3880/210 - 3880/210 simplified gives 388/21
- So, 90/5 + 20/42 = 388/21
In mixed form: 1810/21
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