Add 18/42 and 21/35
18/42 + 21/35 is 36/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
18/42 = 18 × 5/42 × 5 = 90/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
21/35 = 21 × 6/35 × 6 = 126/210 - Add the two like fractions:
90/210 + 126/210 = 90 + 126/210 = 216/210 - 216/210 simplified gives 36/35
- So, 18/42 + 21/35 = 36/35
In mixed form: 11/35
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