Add 20/30 and 4/42
20/30 + 4/42 is 16/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
20/30 = 20 × 7/30 × 7 = 140/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
4/42 = 4 × 5/42 × 5 = 20/210 - Add the two like fractions:
140/210 + 20/210 = 140 + 20/210 = 160/210 - 160/210 simplified gives 16/21
- So, 20/30 + 4/42 = 16/21
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