Add 20/5 and 18/42
1st number: 4 0/5, 2nd number: 18/42
20/5 + 18/42 is 31/7.
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,
20/5 = 20 × 42/5 × 42 = 840/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
18/42 = 18 × 5/42 × 5 = 90/210 - Add the two like fractions:
840/210 + 90/210 = 840 + 90/210 = 930/210 - 930/210 simplified gives 31/7
- So, 20/5 + 18/42 = 31/7
In mixed form: 43/7
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